Force
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 4 possible effects of friction on object?, | Heat, slow down, stop, and oppose motion
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| Why does a soccer ball slow down when it rolls | Friction causes the soccer ball to slow down when it rolls.
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| Friction is _________ between rough surfaces than between smooth surface? | Greater
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| The force of attraction between two objects is called: | Gravity
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| Gravity causes falling objects to: | Speed-up
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| What two things does the strengh of gravitational force depend on? | The distance between two objects and mass.
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| Gravitational force is stronger when object are____________ each other. | Attract
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| Gravitational force is stronger when object have _______ mass. | More
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| Why does a person weigh more on Earth than on the moon? | Earth as more mass than the moon.
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| What attracts objects to a magnet? | Magnetic Force
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| Describe how a compass can help you find direction. | A compass can help you find direction by the Magnetic forces in the air.
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| Part 4: Balance and Unbalanced Forces |
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| What two forces act equally on an object but in opposite direction, the object ______ | Doesn't move
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| When you add the total of all of the forces acting on an object, you get ______ | Net Forces
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| The force of water pushing up on the an object is ________ | Buoyant Force
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| When you go down a slide, what force is acting on you to make you move. | Gravity
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| What force is acting to slow you down on a slide? | Friction
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| When the force of gravity is equal to the fou in force of friction, what will happen? | The object will stop moving.
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| What is the difference between balanced and unbalanced forces? | Balance is forces that cancel each other out and unbalance forces that don't cancel each other.
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| What affects how an object moves? | Net Force
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| What is the net force when the forces are balanced? | The net force is zero.
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| What results when force are unbalanced? | Motion
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| What force pushes up on you in water? | Buoyant Force
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| A buoyant force act in the ______from weight | Opposite direction
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| What is weight? | Weight is the measure of gravity pulling down on you.
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| What will happen if the buoyant force is equal to or greater than the weight of the water you push aside? | It will cause to float.
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| What will happen the buoyant force is less than the weight of water you push aside? | It would cause the water to go down faster.
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| Part 5:Work and Simple Machine |
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| What means using a force to move an object? | Work means using a force to move an object.
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| If a force is applied and an objectth does not move, is work being done? | No
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| What is anything that makes work easier? | Sea-saw
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| What are two parts of a lever and what do they do? | The lever has two parts: Lever arm and the fulcrum. Lever arm is what you hold. The Fulcrum is the balance point that supports the bar.
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| Give an example of the lever. | See-saw
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| Give an example of an incline plane. | Slide
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| What can a pulley help you witht? | Lift a heavy item from the ground.
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| Give an example of a wheel-and -axle? | Clock
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| What is made of two or more simple machine? | Compound Machine
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| How do compound machine help make work easily? | Compound machine uses less force.
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Created by:
clakid
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