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forces in motion
ashley elliott
| Question | Answer |
|---|---|
| what are the 4 possible effects of friction on objects? | generate heat, slow down, stop, and not move at all |
| why does a soccer ball slow down when it rolls? | friction |
| friction is_________ between rough surfaces than between smooth surfaces | greater |
| the force of attraction between two objects is called _________. | gravity |
| gravity causes falling objects to __________. | speed up |
| what two things does the strength of gravitational force depend on? | the mass and the distance between objects |
| gravitational force is stronger when objects are________ to each other. | closer |
| gravitational force is stronger when objects have ______mass. | more |
| why does a person weigh more on earth than on the moon? | earth has a greater mass than the moon |
| what attracts objects to a magnet? | the magnetic force in the magnetic field surrounding the magnet |
| what are the two ends of a magnet called? | poles |
| describe how a compass can help you find direction? | a compass is a magnet. Its north pole {needles} always points down to the north |
| what two forces act equally on a object but in opposite directions, the object__________ ___________. | dosent move |
| when you add the total of all the forces acting on an object, you get the_____ _____. | net force |
| the force if water pushing up on an object is called the __________. | buoyant force |
| when you go down a slide, what force is acting on you to make you move? | gravity |
| when you go down a slide, what force is acting on you to make you move? | gravity |
| what force is acting to slow you down on a slide? | friction |
| when the force if gravity ids equal to the force of friction, why will happen? | the object will stop moving |
| what is the difference between balanced and unbalanced forces? | unbalanced forces causes motion. balanced forces does not cause things to move. |
| what affects how an object moves? | net force |
| what is the net force when forces are balanced? | zero |
| what force pushes up on you in water? | buoyant force |
| a buoyant force acts in ___________ from weight? | opposite |
| what is weight? | measure of the gravity pulling down on you |
| what will happen if the buoyant force is equal to or greater than the weight of the water you push aside? | you will float |
| what will happen the buoyant force is lass than the weight of water you push aside? | you will sink |
| what means using a force to move an object? | work |
| if a force is applied and an object does not move, is work being done? | no |
| what is anything that makes work easier? | simple machine |
| what are the 2 parts of a lever and what do they do? | arm-bar that you move fulcrum-is the balance point that stays still |
| give an example of a lever. | hammer |
| give an example of an inclined plane. | stairs |
| what is made of two or more simple machines? | compound machine |
| how do compound machines help make work easier? | less force on a greater distance |
Created by:
clakid
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