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KS3 Forces and effect on movement

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show a force is a push or pull movement  
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show newtons  
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show friction, upthrust, air resistance  
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name non-contact forces   show
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show upthrust is the upward force that a liquid or gas use on a body floating in it.  
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Define gravity   show
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show friction is a force that slows you down, created when one object rubs against another!  
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show air resistance is the opposite force to movement and air resistance is created by particles!  
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Explain why air resistance increases when you move faster?   show
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show gravity  
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show air resistance  
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When you drive in a car, which force hits against a car?   show
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Where does upthrust occur?   show
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Which force keeps us on the ground so we don’t float away?   show
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In which direction does gravitational force apply   show
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show the weight will be the different because only the mass does not change but when you are in space your weight changes it becomes lighter.  
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show air resistance increases as there are more particles to hit you  
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show it enable them to move through water with the least possible water resistance.  
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What happens to the air resistance when the parachute is opened   show
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show As his speed reduces the air resistance will become less and eventually the forces will be the same again.  
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show forces (air resistance and gravity) are balanced and you are moving at a constant speed.  
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show Weight is the force that pulls you down; mass is the Number of atoms in the body  
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What will be different on the moon than on the earth: mass or weight?   show
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show Upthrust  
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What can you do to make a car go faster?   show
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show True  
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show Forces are balanced when they are equal in SIZE but opposite in DIRECTION: the forces cancel each other out.  
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When are forces unbalanced?   show
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show The Earth  
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show answer is stationary  
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show direction may change, or the object may slow down, or it may accelerate(go faster)  
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This person is pushing down on the chair with force of 650N. What other force is acting to make it balanced   show
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show Answer: 20N to the left  
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A car is moving at a constant speed and the thrust of the engine is 500N forward. How big is the friction?   show
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show because the car is moving FASTER, it means that the forces are UNbalanced. So friction is less than 700N backwards.  
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show because the car is moving SLOWER, it means that the forces are UNbalanced. As the car is slowing down, it means that the backwards force is bigger: so friction is more than the thrust of the engine.  
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What are the 4 forces on a car moving at a steady/constant speed   show
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Compare the size of the 4 forces on a car moving at a STEADY/CONSTANT speed   show
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show Gravity, Push of the floor  
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show Gravity and Push of the floor are the same SIZE  
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