Hard
Super Hard
Super Duper hard
Crazy hard
Extreme
100
Any change of position is called a. motion b. force c. position d. gravity
What is a. MOTION
100
Gravity always acts towards the ________ of the earth. a. top b. side c. outside d. center
What is D. CENTER
100
Forces exist all around us ALL the time. True or False
What is TRUE
100
In which two situations will the poles attract? a. both poles are north b. one pole is south and the other is north c. one pole is north and the other is south d. both poles are south
What is B & C
100
Which of the following BEST describes the difference between the sound of an object that vibrates quickly and the sound of an objects that vibrates more slowly? a. the object that vibrates more slowly has a higher pitch b. the object that vibrates more slowly has a lower pitch c. the object that vibrates more slowly has the same pitch d. the object that vibrates more slowly has a louder sound
What is B. the object that vibrates more slowly has a lower pitch
200
A ball is lying on the floor. When will the ball move? a. It will never move b. When a force acts on it c. When gravity acts on it d. When the lights are turned on
What is b. WHEN A FORCE ACTS ON IT
200
The friction between an object and the air is called... a. friction b. gravity c. compression d. air resistance
What is d. AIR RESISTANCE
200
A magnet will pick up an object that is made of a. plastic b. iron c. wood d. copper
What is b. IRON
200
Apples fall from trees because of the force of... a. compression b. friction c. gravity d. air resistance
What is C. GRAVITY
200
Friction acts whenever two objects are in... a. water b. contact c. trouble d. air
What is b. CONTACT
300
If you wish to kick a soccer ball to go as far as possible, you should... a. kick it from the side b. kick it very hard c. kick it without shoes on d. kick it to a teammate
What is b. KICK IT VERY HARD
300
____________ poles repel.
What is LIKE or SAME
300
The force of gravity gets ___________ as you travel AWAY from the earth. a. weaker b. bigger c. stronger d. smaller
What is a. WEAKER
300
Forces act on SOME objects. True or False
What is False
300
_________ POLES ATTRACT.
What is UNLIKE OR OPPOSITE
400
Friction __________ objects down as the two surfaces rub together.
What is SLOWS.
400
There is more friction if the surfaces are... a. smoother b. rougher
What is b. ROUGHER
400
The amount of friction depends on the ____________ of the surfaces in contact.
What is ROUGHNESS
400
There is LESS friction if the surfaces are... a. smoother b. rougher
What is A. SMOOTHER
400
Air resistance acts in the ________________ direction of the objects in motion. a. same b. opposite
What is b. OPPOSITE
500
Unbalanced forces make objects SPEED UP, SLOW DOWN, AND __________________.
What is CHANGE DIRECTION.
500
If the forces on an object are balanced, the object will not be moving or will be moving with a speed that ______________ changing.
What is IS NOT.
500
If the forces on an object _____________ balanced, it will speed up, slow down, or change direction.
What is ARE NOT.
500
ALL non-metals are non-magentic materials. ___________ metals ARE magnetic materials.
What is SOME.
500
How does a parachute work? a. The parachute is aerodynamic. The air around the parachute helps push the parachute downwards. b. The parachute slides through the air around it. This provides a force that slows the parachute down. c. There is no friction force, as the parachute is not in contact with anything else on the way down.
What is b. The parachute slides through the air around it. This provides a force that slows the parachute down.
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