Grade 7 First Grading

2. What is Science?

3. THE NATURE OF SCIENCE
 The word “science” came from the Latin
 word “scientia” which means
 “having knowledge”
 This means that all scientific knowledge have
undergone a through investigation and are
concluded based on gathered data from
experimentation.

4.  Louis Pasteur
During pasteurization, farm and
brewery products such as milk, wine
and beer are heated briefly to a
temperature between 60 and 100 °C,
killing microorganisms that can cause
them to go bad.
 Robert Hooke
 He used the term “cells” to describe
the compartment of cork cell.
Some Famous Foreign Scientists

5.  Sir Isaac Newtion
He formulate the three laws
of motion.
 Galileo Galilei
He created one of the first
modern telescope. He also
successfully depend the
Heliocentric Theory which
states that the earth and the
other planets revolved
around the sun and not the
other way around.

6.  Marie Curie
She won the Nobel Prize in both Physics
and Chemistry. She discovered the
and helped to apply in the field of X-ray.
 Albert Einstein
He developed the general theory of
relativity which one of the pillars of modern
physics alongside quantum mechanics. He
best known for his equation in energy.
 Charles Darwin
He is best known for his contributions to
the science of evolution. His proposition
that all species of life have descended over
time from common ancestors is now widely
accepted, and considered a foundational
concept in science.

7. Some Famous Filipino Scientist
 Dr. Fe Del Mundo
The first Filipina given the title of National
Scientist and the first Filipina to be enrolled in
Harvard University Medical School. She
contributed for the invention of improvised
incubator.
 Eduardo Quisumbing
He is known for his expertise in medical plants of
the Philippines. He contributed more than 129
scientific articles, mostly on orchids. The plant
“saccolabiumquisumbing” is named to honor
 Pedro Escuro
He is known for his contributions in plant
breeding and genetics.

8.  Arturo Alcaraz
He is a volcanologist, him and his team powered an
light bulb using steam-powered electricity.
 Gregorio Zara
He invented the two-way television telephone or
videophone in 1995 which was patented as a “photo
phone signal separator network”.
 Luz Oliveros-Belardo
She is a Filipino scientist and pharmacist. In 1987, she was
awarded National Scientist of the Philippines for her
extensive research on herbal medicine and essential oils.

9. Effects of Science andTechnology
 The accumulation of greenhouse gases in the atmosphere like carbon dioxide,
methane, nitrous oxide and chlorofluorocarbonds (CFCs), has caused global
warming.
 The smoke of cars produce intensifies the greenhouse effect thus, causing global
warming.
 The continuous cutting of trees due to the technological development in
constructing houses and buildings which requires a great number of woods for
strong foundations affects the structures of our mountains causing flashfloods
and soil erosion.

10. Effects in our Health
Overuse or dependence on technology may have adverse psychological
effects, including:
 Psychological Effect
 Isolation
 Depression and anxiety
 Physical Health Effects
 Eyestrain
 Poor posture
 Sleep problems
 Reduced physical activity

11. Effects in Children
Children who overuse technology may be more likely to experience issues,
including:
 low academic performance
 lack of attention
 low creativity
 delays in language development
 delays in social and emotional development
 physical inactivity and obesity
 poor sleep quality
 social issues, such as social incompatibility and anxiety
 aggressive behaviors
 addiction to these technologies
 higher BMI

12. Advantage of Science and Technology
 Life is become easy and comfortable through science and technology.
 Travelling has become easy and fast in minutes.
 Communication is become easy, fast and cheaper.
 Standard of living have increased with the increase in technology.
 Man have become advanced by using various new technology.
 Due to the development in the science and technology impossible have
become possible.
 Difficult thing and work have become easy and comfort to man due to science
and technology.
 Life has become easy and stable.

13. Science Investigation

14. Knowledge can help in solving problems. It can be acquired in
variety of ways. Some of which as follows:
 Learning from experience
 Seeking advice from authority
 Believing in intuition
 Observing tradition
 Following the scientific method

15. What is ScientificInquiry?
 Science is all about learning and understanding
something new. Inquiry means to ask for
information or investigate something to find out
more. So, scientific inquiry is using evidence from
observations and investigations to create logical
explanations and answer questions.
 Scientific inquiry is for people who want to be
challenged and use creative and critical thinking to
answer questions related to science.

16. Inquiry vs Method
 There are some major differences between the scientific method and scientific inquiry. First, the
scientific method seeks to answer one question, whereas scientific inquiry does not. After
investigations, explanations, and evidence, the scientist often thinks of more questions that need
answering.
 Second, the scientific method is linear, meaning the step-by-step process is done in the same order
each time. It usually consists of six steps: question, observation or investigation, hypothesis,
experiment, analysis of data (reviewing what happened during the experiment), and conclusion.
Scientific inquiry, on the other hand, is non-linear, which means it does not follow a consistent step-
by-step process. It can be any order of asking questions, conducting investigations, collecting
evidence, developing explanations from the evidence, and communicating and defending conclusions.
 Finally, the last step in the scientific method is communicating the results at the end of an experiment.
For instance, after an experiment on the effects of mixing chocolate syrup with orange juice, you might
write a paper and defend your findings at the school science fair. With scientific inquiry, however,
constant communication is necessary throughout the entire process, from start to finish, not just to tell
and defend your results.

17. Attitudes of a scientist
 Curiosity – Being inquisitive shows a person’s desire to learn and explore. A person who is curious always has a
question in mind.
 Open-mindedness – This is the ability of a person to accept mistakes and ideas from other people to improve one’s
investigations.
 Perseverance – A person with perseverance shows a strong determination to pursue his/her work in spite of
challenges and problems during the investigations.
 Humility – this is a person’s quality of being respectful. There is the absence of pride in a humble person.
 Intellectual honesty – A person does not pirate or steal other person’s work and claim it as his property.
 Patience – This is the ability of a person to wait without being upset. This helps a scientist persevere in his/her study.
 Resourceful – This refers to a person’s ability to find alterative solutions to problems, especially in difficult situations.
 Skepticism – refers to the ability to question the authenticity of something considered factual.
 Objectivity – This is the ability to distinguish true observations from hearsay. An objective person is free from
personal prejudice or biases.

19. Qualitative & Quantitative Observations
 Qualitative observation an observation based on your senses.
 Example of qualitative observation are color, texture, taste
and shape.
 Quantitative observation an observation that utilizes scientific
instruments developed by technology to measure something.
 Example of quantitative observation are mass, volume,
length.

20. Variables that are used in an experiment
 Controlled variable – a condition that remains the same throughout the
experiment.
 Manipulated variable (independent variable) – a condition that is
changed during the experiment.
 Responding variable (dependent variable) – a condition that is observed
or measured during the experiment.

21. Example and Explanation of the Steps of
Scientific Method
 Scientific Question – How does salt affect the rate of freezing water?
 Developing Hypothesis – Salt slows down the rate of freezing of water?
 Doing an Experiment – An experiment has to be done in which the amount of water is to be kept
constant while the amount of salt is to be changed.
 The amount of water is the controlled variable (constant)
 The amount of salt is the manipulated variable ( to be changed)
 The time to freeze the water is the responding variable (to be observed or measured)
 Interpreting data – observed and measured data obtained from the experiment are analyzed and
interpreted based on the hypothesis
 Conclusion – is a statement summarizes how the results of the experiment support or contradict
the hypothesis.

22. The result in an experiment are based on the two set-ups:
 Control set-up is one in which the controlled variable is included while the
manipulative variable is excluded.
 Experimental set-up is one in which both the controlled and the manipulated
variable are present.
 Example: We may make use of 4 identical containers, each filled with 250
milliliters of water. Distinguish the container using labels such as A,B,C, and D. in
containers B, C, and D, we may dissolved 10 grams, 15 grams, and 20 grams of
salt, respectively. Then record the time it takes the water in each container to
into solid in a freezer. Container A is the control set-up since it does not contain
salt. On the other hand, containers B, C, and D are the experimental set-ups
they contain salt.

23. Please answer
your Quiz No. 1
It should be done today.
●For Grade 7 - Bayabas until 6:00 PM
●For Grade 7 - Mangga until 8:00 PM.
Code: l2nz3qz
https://classroom.google.com/w/MTIy
Nzc0NzcxMTM3/tc/MTI2MzQwMTIzO
TY4

24. GOOGLE CLASSROOM
Instructions:
1. Click the link
https://classroom.google.com/c/MTIyNzc0NzcxMTM3?cjc=l2n
z3qz
2. Answer the “Quiz No 1 in Science and Technology/ Scientific
Investigation”, then submit.
3. Click “View Score” to check the score.
4. Click “Open Assignment” in private message write your score
and the name of quiz (Ex. Score: 10 Science and Technology)
5. Click “Mark done”
6. See the picture below for your reference.