Aidan's gravity project
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This document discusses different types of forces and simple machines. It explains that gravity pulls objects towards massive bodies like Earth and the moon, and that gravity is weaker on the moon than Earth. It also describes friction as the force that makes it harder to move objects over surfaces. Then it lists and provides brief explanations and examples of six simple machines: lever, wedge, wheel and axle, pulley, inclined plane, and screw.
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Eduardo's pres
Gravity is a force that pulls objects with mass toward each other, such as pulling people down to the surface of the Earth. It is caused by the massive size of the Earth. Gravity keeps people from floating off into space and causes them to fall back to Earth when jumping. Simple machines like levers, wheels and axles, screws, inclined planes, pulleys, and wedges are used to help move, connect, lift, and brake objects using less force. Work is done when a force causes an object to move a distance, and force allows work to be accomplished while friction helps stop moving objects.
Forces
Forces are pushes or pulls that allow objects to move or be moved. Forces can come from magnets, people pushing or pulling objects, wheels that lift things, screws that move themselves or other objects, or combinations of simple machines like wheels, axles, levers and screws working together. Forces are involved whenever an object's motion changes or an object is lifted.
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Gravity is an invisible force that pulls all objects towards each other. Isaac Newton observed an apple falling from a tree and realized some force must be pulling it down, which he called gravity. Gravity depends on an object's mass, so the large mass of the Earth causes it to pull everything on Earth towards its center, including people, oceans, and air. The moon also orbits Earth due to gravitational pull.
gravity and friction ppt
The document discusses forces of friction and gravity. It begins with an agenda for the lesson, which includes demonstrations on friction, notes on friction and gravity, and an activity. The notes define friction as the force that opposes the sliding motion of surfaces in contact, and gravity as the force that attracts objects toward each other. It describes how mass and distance affect the gravitational force between objects. Friction and gravity can both affect the speed and direction of an object. The lesson concludes with challenges applying understanding of balance and center of gravity.
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1) Gravity is a force that pulls objects towards each other, with larger objects and closer proximity resulting in a stronger gravitational pull.
2) Sir Isaac Newton discovered gravity through observing an apple fall from a tree in 1665, realizing gravity held the moon and planets in orbit.
3) Gravity holds the planets in orbit around the sun and gives objects weight and holds them on the ground, though its strength varies between bodies like Earth and the moon.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It occurs due to micro welds forming between the bumpy surfaces on a molecular level. There are different types of friction, including static friction before motion occurs, kinetic friction during motion, rolling friction when an object rolls over a surface, and sliding friction when surfaces slide past one another. While friction is necessary for walking, gripping objects, and other functions, it also reduces machine efficiency and causes wear. Therefore, friction is considered a "necessary evil".
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This science unit for 2nd grade students introduces the concepts of push and pull forces and how they can make objects move in different ways depending on an object's size, shape, weight, and the surface it is moving on. It also explains how forces can change an object's shape and how gravity causes all objects to fall to the ground, with heavier objects hitting first due to their greater weight. Magnets are also noted for their ability to attract metal objects without touching them.
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Simple machines are tools with few parts that make work easier by changing the direction or magnitude of force. Gravity pulls everything on Earth downward and the strength of gravity depends on the size of the planet. Friction occurs when two objects rub together and the amount of friction depends on the surfaces, with ice having less friction than car tires. Force is a push or pull, like gravity acting on an apple falling from a tree, that causes an object to move or change motion.
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Gravity is a force that pulls objects with mass toward each other, such as pulling people down to the surface of the Earth. It is caused by the massive size of the Earth. Gravity keeps people from floating off into space and causes them to fall back to Earth when jumping. Simple machines like levers, wheels and axles, screws, inclined planes, pulleys, and wedges are used to help move, connect, lift, and brake objects using less force. Work is done when a force causes an object to move a distance, and force allows work to be accomplished while friction helps stop moving objects.
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Forces are pushes or pulls that allow objects to move or be moved. Forces can come from magnets, people pushing or pulling objects, wheels that lift things, screws that move themselves or other objects, or combinations of simple machines like wheels, axles, levers and screws working together. Forces are involved whenever an object's motion changes or an object is lifted.
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Gravity is an invisible force that pulls all objects towards each other. Isaac Newton observed an apple falling from a tree and realized some force must be pulling it down, which he called gravity. Gravity depends on an object's mass, so the large mass of the Earth causes it to pull everything on Earth towards its center, including people, oceans, and air. The moon also orbits Earth due to gravitational pull.
gravity and friction ppt
The document discusses forces of friction and gravity. It begins with an agenda for the lesson, which includes demonstrations on friction, notes on friction and gravity, and an activity. The notes define friction as the force that opposes the sliding motion of surfaces in contact, and gravity as the force that attracts objects toward each other. It describes how mass and distance affect the gravitational force between objects. Friction and gravity can both affect the speed and direction of an object. The lesson concludes with challenges applying understanding of balance and center of gravity.
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1) Gravity is a force that pulls objects towards each other, with larger objects and closer proximity resulting in a stronger gravitational pull.
2) Sir Isaac Newton discovered gravity through observing an apple fall from a tree in 1665, realizing gravity held the moon and planets in orbit.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It occurs due to micro welds forming between the bumpy surfaces on a molecular level. There are different types of friction, including static friction before motion occurs, kinetic friction during motion, rolling friction when an object rolls over a surface, and sliding friction when surfaces slide past one another. While friction is necessary for walking, gripping objects, and other functions, it also reduces machine efficiency and causes wear. Therefore, friction is considered a "necessary evil".
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This science unit for 2nd grade students introduces the concepts of push and pull forces and how they can make objects move in different ways depending on an object's size, shape, weight, and the surface it is moving on. It also explains how forces can change an object's shape and how gravity causes all objects to fall to the ground, with heavier objects hitting first due to their greater weight. Magnets are also noted for their ability to attract metal objects without touching them.
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Simple machines are tools with few parts that make work easier by changing the direction or magnitude of force. Gravity pulls everything on Earth downward and the strength of gravity depends on the size of the planet. Friction occurs when two objects rub together and the amount of friction depends on the surfaces, with ice having less friction than car tires. Force is a push or pull, like gravity acting on an apple falling from a tree, that causes an object to move or change motion.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It arises due to bumps and imperfections at the microscopic level between the two surfaces that cause them to stick together. There are two types of friction: static friction that acts before motion occurs, and kinetic friction that acts once motion has started. Friction is both helpful in many applications like walking and writing, but also causes inefficiencies in machines by converting useful energy into heat and causing wear and tear of moving parts over time. Engineers try to control friction through measures like changing surface roughness, adding grooves or spikes, or using lubricants.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It arises due to bumps and imperfections at the microscopic level between the two surfaces that cause them to stick together. There are two types of friction: static friction that acts before motion begins, and kinetic friction that acts once motion is underway. Friction is both helpful in many applications like walking and writing, but also causes inefficiencies in machines by converting useful energy into heat and causing wear and tear of moving parts over time. Engineers try to control friction through measures like changing surface roughness, adding grooves or spikes, or using lubricants.
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1) Forces cause objects to move or change their motion. Applying an unbalanced force makes an object start moving, while balanced or cancelled out forces will not cause motion.
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This document discusses six simple machines: lever, wheel and axle, inclined plane, screw, pulley, and wedge. It notes that a lever uses a pivot and fulcrum to move objects more easily, while wheels and axles allow wheels to support weight and roll on surfaces. Inclined planes are slanted surfaces that make moving objects easier, and a screw is used to tighten jars. A wedge is pushed into obstacles like an axe into wood.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It arises due to bumps and imperfections at the microscopic level between the two surfaces that cause them to stick together. There are two types of friction: static friction that acts before motion occurs, and kinetic friction that acts once motion has started. Friction is both helpful in many applications like walking and writing, but also causes inefficiencies in machines by converting useful energy into heat and causing wear and tear of moving parts over time. Engineers try to control friction through measures like changing surface roughness, adding grooves or spikes, or using lubricants.
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Friction is the force that opposes the relative motion between two surfaces in contact with each other. It arises due to bumps and imperfections at the microscopic level between the two surfaces that cause them to stick together. There are two types of friction: static friction that acts before motion begins, and kinetic friction that acts once motion is underway. Friction is both helpful in many applications like walking and writing, but also causes inefficiencies in machines by converting useful energy into heat and causing wear and tear of moving parts over time. Engineers try to control friction through measures like changing surface roughness, adding grooves or spikes, or using lubricants.
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This document discusses different types of motion including up and down, straight line, round and round, and zigzag motion. It describes how to measure motion through distance, time, and speed. Forces that affect motion include the strength and direction of applied forces, the mass of an object, and friction. Gravity is also identified as a force that pulls objects down toward Earth.
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Magnets can attract or repel other materials and have useful applications like holding items on refrigerators. The six simple machines - lever, screw, pulley, wheel and axle, inclined plane, and wedge - help do work and add force to move objects. A lever consists of a bar and fulcrum and can help lift weights with less effort. Matter exists as solids, liquids, or gases and can change forms through processes like melting, freezing, condensation, and evaporation.
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Friction is a force that resists motion between objects in contact with each other. It causes a moving object to slow down and stop. The size of the frictional force depends on how hard the surfaces are pressed together and the types of materials. Sliding friction occurs when surfaces slide over each other, while rolling friction involves wheels or bearings. Lubricants can reduce frictional forces.
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The heart is a muscular organ located in the chest cavity of humans and other animals. It pumps blood through the circulatory system using rhythmic contractions called heartbeats. The heart receives deoxygenated blood from the body and pumps it to the lungs, and receives oxygenated blood from the lungs and pumps it throughout the body to supply cells with oxygen and nutrients.
The digestive system ahanu
The digestive system is a series of tube-like organs that converts food into body fuel over a course of about 30 feet inside the body. Food is broken down, sorted, and reprocessed through the different organs like the mouth, esophagus, stomach, small intestine, large intestine, and rectum before nutrients are circulated throughout the body. The process begins with chewing in the mouth and includes the breakdown of large food molecules into smaller molecules using enzymes secreted along the digestive tract so that the body can absorb nutrients.
Sharif
The diagram shows the basic anatomy of the heart with four chambers - the left and right atria on top receiving blood and the left and right ventricles on bottom pumping blood out. Arteries like the aorta carry oxygenated blood away from the heart to the body while veins return deoxygenated blood to the heart.
Presentationkevin
This document provides an overview of four major body systems: the digestive system, circulatory system, skeletal system, and muscular system. Key components of each system are called out, including the aorta, vena cava, lungs, heart chambers and valves, bones such as the skull, spine, ribs and hips, and major muscles like the deltoid, biceps, triceps, quadriceps, and gluteus maximus. Overall, the document outlines the major anatomical structures and components that make up four critical body systems.
Natalie's systems
The document discusses three human body systems: the digestive system, which breaks down food; the circulatory system, which transports blood and nutrients; and the skeletal system, which provides structure and protection and allows movement.
Matthew
The document discusses several body systems including the digestive system, circulatory system, lungs, and skeleton. It mentions the digestive system, circulatory system including the left atrium, capillaries, and lungs. The skeletal and muscular systems are also briefly referenced.
Lilyk
The document discusses three key systems in the human body: the circulatory system which includes veins, arteries and capillaries to transport blood; the skeletal system which provides structure and support; and additional unnamed systems are referenced but not described.
Lillie human body
This document contains images of a video, a heart, and arteries, veins and capillaries. It also includes a skeletal system model to demonstrate anatomy.
Jaidas hart
The circulatory system document discusses the heart and blood flow through the body. It notes that the heart is located in the center of the chest and is about the size of a fist, yet it pumps a lot of blood. The blood flows from the arteries to the capillaries to the veins, then back to the heart. Even when sleeping, the heart continues pumping blood throughout the body.
Jaidas digestive system
The document summarizes the basic stages of the human digestive system, starting with food entering through the mouth and esophagus into the stomach, then passing to the liver, small intestine, and large intestine before reaching the colon, where nutrients are absorbed and waste is expelled. The document uses a cheeseburger example to illustrate the journey of food through the digestive tract and provides diagrams labeling the small and large intestines and colon.
Human body by patrick hillary
The document describes the major blood vessels and heart anatomy. The heart has four chambers - right and left atria and ventricles. The aorta and pulmonary artery carry oxygenated and deoxygenated blood from the heart. Arteries branch into capillaries and veins return blood to the heart. Key bones of the skull, shoulders, arms, ribs, and legs are also listed.
Grace's disedtive system
The document discusses the major systems and structures of the human body including the digestive system, heart, skeletal system, and their key components such as the cranium, mandible, scapula, ribs, vertebrae, and tarsal bones.
Colleen body
The article discusses how the COVID-19 pandemic has impacted the restaurant industry. Many restaurants have been forced to close or shift to takeout and delivery only due to lockdown orders and social distancing guidelines. Those that remain open are struggling with reduced revenue and demand as customers stay home or limit dining out. The future remains uncertain for restaurants as the pandemic continues to affect business operations and consumer behavior.
Clare body system
The document discusses three body systems: the digestive system, which breaks down food for use and elimination; the circulatory system, which circulates blood and transports nutrients, oxygen, hormones and waste; and the skeletal system, which provides structure, protection and movement through bones and joints.
Bodysystemsophia
The document describes the human circulatory system. The blood flows from the heart through arteries, then through capillaries to veins, and back to the heart to repeat the cycle. It also mentions that the femur is the largest and strongest bone, the smallest bones are in the ear, and babies are born with an opening in the top of the skull.
Body systems cm
The document describes two main human body systems: the digestive system and the circulatory system. It includes labeled diagrams of both systems. The digestive system breaks down food for energy and nutrition. The circulatory system uses the heart, blood vessels, and blood to transport nutrients, oxygen, hormones, and cellular waste throughout the body. It also includes diagrams of the heart and major blood vessels like the aorta, vena cavas and pulmonary circulation.
Body sys calvin
This document discusses three body systems - the digestive system, circulatory system, and skeletal system. It also includes an illustration of the skeletal system showing key bones such as the cranium, vertebrae, ribs, humerus, radius, ulna, femur, fibula, tibia, patella, pelvis, sternum, clavicle, and mandible.
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Aidan's gravity project
- 1. Force
- 2. Gravity is the force that pulls objects towards the larger object. Earth is the larger object that is why things on the Earth fall down. Earth is big. The moon is small that is why there is not as much gravity on the moon. Gravity does not make you unable to go up. You can jump but you will fall back to earth. Over longer distances things will fall faster. The person on the moon can jump higher than the goalie because gravity is not pulling on him.
- 3. Friction is the force that makes it harder to push or pull things on a surface. If we didn’t have friction if you touched something it would go on forever.
- 4. Simple Lever Wedge Machines Wheel and Axle Pulley Inclined Plane Screw
- 5. A wedge helps split or go though things. In the picture the hammer hits Wedge the wedge the wedge goes though the wood. A wedge splits the wood not smashes it.
- 6. These are the three different kinds of levers. Levers help you lift Lever something heavy. You can use a shovel to prop a rock out of the ground instead of lifting it.
- 7. A wheel and axle is a wheel connected to a pole. When one rotates the other one Wheel and Axle does too.
- 8. The picture to the left is a block and tackle pulley. A block and tackle helps lift Pulley heavy loads.
- 9. On an inclined plane you can slide the load up the inclined plane. This has Inclined Plane friction but is easier than to lift it strait up.
- 10. A screw is an inclined plane wrapped around a pole. It helps go into Screw things.
- 11. The End