This document is a sample paper for Class 7 Science. It consists of 42 questions divided into 4 sections (A, B, C, D). Section A has 15 one-mark questions. Section B has 11 two-mark questions. Section C has 11 three-mark questions. Section D has 5 four-mark questions. The paper tests students on topics related to plants, animals, heat, materials, and other concepts taught in Class 7 Science. Students are given 3 hours to complete the paper which is out of a total of 90 marks.
Life processes/Living and Non-Living Things Pop QuizGraceAfolabi2
Life processes/Living and Non-Living Things Quiz Book is created for Science students as an assessment and revision resource through inquiry based learning.
Designed for Primary and Junior Secondary Students.
Life processes/Living and Non-Living Things Pop QuizGraceAfolabi2
Life processes/Living and Non-Living Things Quiz Book is created for Science students as an assessment and revision resource through inquiry based learning.
Designed for Primary and Junior Secondary Students.
Topics Included:
• Origin
• Definition and Example
• Type of Magnets
• Type of Materials
• Properties of Magnet
• Methods to make a Magnet
• Magnetic Compass
• Difference between Permanent and Temporary Magnet
• Important Definitions
• Worksheet
Click Here: https://www.digistore24.com/redir/269221/Manikji/
Topics Included:
• Inside View of a Torch
• Electric Bulb
• Filament
• Terminal
• Electrical Energy
• Electric Cell
• Electric Circuit
• Types of Circuit
• Open and Closed Switch
• Solar Cell
• Conductor and Insulator
• Different Methods of Producing Electricity
this presentation is on the chapter reproduction in animals for class 8 . it includes all the topics in detail mentioned in the chapter . i have made it with a lot of hard work . hope u like it !
THE LIVING ORGANISMS -CHARACTERISTICS AND HABITATS-3 CBSE-V CHAPTER-9BIOLOGY TEACHER
Organisms
An organism is simply defined as any living thing, ranging from microscopic bacteria to large elephants and everything in between.
Different types of plants and animals are found in different areas.
E.g. deserts have camel and cacti as plants. Beaches show coconut trees and crabs. Fishes and other marine animals inhabit the sea
Class 5 EVS Chapter- like father like DaughterMind Tree
This is the PPT of NCERT Book's chapter from class 5 EVS like father like daughter. Download Worksheet for Class I- V https://techteacherwithallsolutions.com
Chapter 10 of Science of class 1th, Very nice animated and the best powerpoint for the children, it made by me; Abhishek Bhartee, not downloaded from any other website.
It is Awesome
Topics Included:
• Origin
• Definition and Example
• Type of Magnets
• Type of Materials
• Properties of Magnet
• Methods to make a Magnet
• Magnetic Compass
• Difference between Permanent and Temporary Magnet
• Important Definitions
• Worksheet
Click Here: https://www.digistore24.com/redir/269221/Manikji/
Topics Included:
• Inside View of a Torch
• Electric Bulb
• Filament
• Terminal
• Electrical Energy
• Electric Cell
• Electric Circuit
• Types of Circuit
• Open and Closed Switch
• Solar Cell
• Conductor and Insulator
• Different Methods of Producing Electricity
this presentation is on the chapter reproduction in animals for class 8 . it includes all the topics in detail mentioned in the chapter . i have made it with a lot of hard work . hope u like it !
THE LIVING ORGANISMS -CHARACTERISTICS AND HABITATS-3 CBSE-V CHAPTER-9BIOLOGY TEACHER
Organisms
An organism is simply defined as any living thing, ranging from microscopic bacteria to large elephants and everything in between.
Different types of plants and animals are found in different areas.
E.g. deserts have camel and cacti as plants. Beaches show coconut trees and crabs. Fishes and other marine animals inhabit the sea
Class 5 EVS Chapter- like father like DaughterMind Tree
This is the PPT of NCERT Book's chapter from class 5 EVS like father like daughter. Download Worksheet for Class I- V https://techteacherwithallsolutions.com
Chapter 10 of Science of class 1th, Very nice animated and the best powerpoint for the children, it made by me; Abhishek Bhartee, not downloaded from any other website.
It is Awesome
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
ANAMOLOUS SECONDARY GROWTH IN DICOT ROOTS.pptxRASHMI M G
Abnormal or anomalous secondary growth in plants. It defines secondary growth as an increase in plant girth due to vascular cambium or cork cambium. Anomalous secondary growth does not follow the normal pattern of a single vascular cambium producing xylem internally and phloem externally.
Travis Hills' Endeavors in Minnesota: Fostering Environmental and Economic Pr...Travis Hills MN
Travis Hills of Minnesota developed a method to convert waste into high-value dry fertilizer, significantly enriching soil quality. By providing farmers with a valuable resource derived from waste, Travis Hills helps enhance farm profitability while promoting environmental stewardship. Travis Hills' sustainable practices lead to cost savings and increased revenue for farmers by improving resource efficiency and reducing waste.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
DERIVATION OF MODIFIED BERNOULLI EQUATION WITH VISCOUS EFFECTS AND TERMINAL V...Wasswaderrick3
In this book, we use conservation of energy techniques on a fluid element to derive the Modified Bernoulli equation of flow with viscous or friction effects. We derive the general equation of flow/ velocity and then from this we derive the Pouiselle flow equation, the transition flow equation and the turbulent flow equation. In the situations where there are no viscous effects , the equation reduces to the Bernoulli equation. From experimental results, we are able to include other terms in the Bernoulli equation. We also look at cases where pressure gradients exist. We use the Modified Bernoulli equation to derive equations of flow rate for pipes of different cross sectional areas connected together. We also extend our techniques of energy conservation to a sphere falling in a viscous medium under the effect of gravity. We demonstrate Stokes equation of terminal velocity and turbulent flow equation. We look at a way of calculating the time taken for a body to fall in a viscous medium. We also look at the general equation of terminal velocity.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skills
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
Deep Software Variability and Frictionless Reproducibility
Class 7-science-set-i-sample-papers
1. Class 7 Science - Sample Paper Set I
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Time allowed: 3 hours; Maximum marks: 90
General Instructions:
a) All Questions are compulsory
b) The Question Paper consists of 42 Questions divided in to four sections A, B, C and D
c) Section- A comprises of 15 questions of one mark each
d) Section- B comprises of 11 questions of two mark each
e) Section- C comprises of 11 questions of three mark each
f) Section- D comprises of 5 questions of Four mark each
Section – A
1. A plant which traps and feeds on insects
a. Rose
b. Cuscuta
c. Chinarose
d. Pitcher Plant
2. Which part of plant takes in carbon dioxide from the air for photosynthesis?
a. Sepals
b. Stomata
c. Root hair
d. Leaf Veins
3. Finger-like projections called villi are present in the
a. Liver
b. Stomach
c. Large intestine
d. Small intestine
4. Odd one out
a. Silk
b. Wool
c. Nylon
d. Cotton
5. In solids, heat gets transferred through the process of:
a. Radiation
b. Convection
c. Conduction
d. Evaporation
2. Class 7 Science - Sample Paper Set I
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Next Education India Pvt. Ltd. All rights reserved. Page 2 of 4
6. Which of the following bases is used as a cleansing agent?
a. Sodium Hydroxide
b. Calcium Hydroxide
c. Magnesium Hydroxide
d. Ammonium Hydroxide
7. Which option best describes a tropical region?
a. Hot and dry
b. Hot and humid
c. Cold and humid
d. Moderate temperature with heavy rainfall
8. When a vehicle, like a train, moves very fast a/an…………..is created temporarily behind it.
a. Eye
b. Cyclone
c. Low pressure
d. High pressure
9. Priti takes 20 minutes to travel to her school with a speed of 3 m/s. How far is the school?
a. 2.0 km
b. 3.2 km
c. 3.6 km
d. 4.1 km
10.Which of the following is a universal solvent?
a. Oil
b. Water
c. Petrol
d. Alcohol
11.Which type of relationship is seen in algae and fungi in lichens?
a. Parasitic
b. Symbiotic
c. Saprophytic
d. Predator – Prey
12.Which microorganism is responsible for the fatal blood disease called Sorter’s Disease?
a. Virus, Anthrax
b. Algae, Anthrax
c. Animal, Anthrax
d. Bacteria, Anthrax
3. Class 7 Science - Sample Paper Set I
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13.Which of the following instrument is used to measure air pressure?
a. Barometer
b. Manometer
c. Hydrometer
d. Anemometer
14.Which of the following substances helps in reducing the irritation caused by the sting of an
ant?
a. Vinegar
b. Lemon juice
c. Orange juice
d. Calamine (zinc carbonate)
15.The vacuum present in a vacuum flask reduces heat transfer by which of the following?
a. Radiation
b. Convection
c. Conduction
d. Conduction and Convection
Section – B
16.Differentiate between saprophytic and symbiotic plants.
17.What are ruminants? Give example.
18.Differentiate between ingestion and egestion.
19.What is mohair wool?
20.List two health hazards in sericulture.
21.Express the given temperature in Celsius Scale: 85˚F.
22.Define uniform motion.
23.Is the distilled water acidic/basic/neutral? How would you verify it?
24.Explain the factors responsible for the depletion of water table.
25.How do elephant living in the tropical rainforest adapt?
26.Explain why holes are made in hanging banners and hoardings.
Section – C
27.Why is transport of materials necessary in a plant or in an animal?
28.Draw the distance time graph for following data. Mention whether motion is uniform or non-
uniform.
Time (in sec) 2 4 6 8 10 12 14 16 18 20
Distance travelled (in meters) 4 7 8 12 15 17 20 22 25 29
4. Class 7 Science - Sample Paper Set I
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29.What is an antacid? How does an antacid work?
30.How does heat and temperature differ from each other?
31.
a. Define sericulture.
b. What is a cocoon?
c. Explain the process of obtaining silk thread from the cocoon.
32.Differentiate between acids and bases.
33.List any three ways by which we can conserve water.
34.The states of rest and motion are relative terms. Explain with the help of an example.
35.What is a lightning conductor? How does it help?
36.What is camouflage? Explain with example.
37.Why are houses made of mud and bricks in rural areas?
Section - D
38.With help of diagram explain life cycle of moth.
39.With help of diagram explain digestive system of human beings.
40.
a. What is a simple pendulum? Define the time period of a simple pendulum.
b. State whether the following statement is true or false: The time period of a given pendulum
is not constant.
c. In an experiment to measure the time period of a simple pendulum, the time for 20
complete oscillations was found to be 36 sec. What is the time period of this pendulum?
41.
a. What is the role played by the stomata in plants?
b. Mention some of the special features of desert plants.
42.
a. An iron ball at 40° C is dropped in a mug containing water at 40° C. What will be the
passage of flow of heat in the system? Explain.
b. How does heat flow in a body having one end cool and the other at high
temperature?