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Gr 4 Science Test 4
Grade 4 Science Test 4 Study Sheet
Question | Answer |
---|---|
__________ is the force that causes an object to move | Effort |
The amount of effort needed on a lever is determined by the distance between the effort and the ____________. | fulcrum |
It takes ________ force to move a heavier object than to move a lighter object. | more |
When you use ________ force on an object, it will have a greater change in position. | more |
__________ is the force that resists the movement of objects against each other. | Friction |
_________ is the force that pulls objects toward the earth. | Gravity |
A _________ is the weight of the object being moved. | load |
A ___________ is an object that makes work easier. | machine |
__________ is a change in an object's position | Motion |
An _____________ is a flat, sloped object. | inclined plane |
A longer inclined plane allows you to use _______ force to move an object. | less |
A _________ is a bar that turns on a point. | lever |
A ___________ is a wheel with a groove that can hold a rope. | pulley |
A __________ is an inclined plane wound around an axle. | screw |
A ___________ is one or more inclined planes used to force things apart. | wedge |
A ________________ is a wheel with a rod running through it. | wheel and axle |
A __________ is a push or a pull. | force |
Something moves when the forces acting on it becomes ______________. | unbalanced |
A _________ is the point on which a lever turns. | fulcrum |
Wheel and axles with "teeth" that work together are called _________. | gears |
Both fixed and movable pulleys are used in a ______________. | block and tackle |
A block and tackle allows you to use _________ force when lifting an object by moving the rope a greater distance. | less |
Six types of Simple Machines... | 1. lever 2. wheel and axle 3. Pulley 4. Inclined Plane 5. Screw 6. Wedge |