Vocabulary
Forces
Friction/Force
Speed & Simple Machines
Universal Forces
100
A push or pull on an object
What is force
100
The force of gravity acting on an object is its:
What is weight
100
What type of force helps you stop or slow your bike down?
Friction
100
Sometimes moving objects do not change how fast or slow they move. They move at a ______speed.
What is constant?
100
The universal force that acts only on protons and neutrons in the nucleus of an atom
What is the strong nuclear force
200
If an object is in a different place its _______ has changed.
position
200
Most of the forces you use are contact forces. When you push or pull an object, you mush contact, or touch, the object. Which of these is a contact force? A) The plane looses power and falls to the ground. B) You swing your bat and hit the ball.
B. You swing your bat and hit the ball.
200
Which offers a greater amount of friction, rough sandpaper or the surface of a dry erase board?
sandpaper
200
I can slow my car down or speed it up. I don't drive the same all the time. My speed it called ________.
Variable Speed
200
I am a non-contact force. You can pick up nails and staples with me because they are made from iron.
What is magnetism.
300
The force that opposes the motion of objects that touch as they pass
What is friction
300
What happens when an unbalanced force acts on an object? A) the object remains in place B) the object moves
What is the object moves?
300
The amount of friction between two objects depends on me?
What is surfaces?
300
I am a gradual inclined plane wrapped around a center post.
What is a screw?
300
I am a non-contact force that can affect an object w/o touching it. I pull skydivers back to Earth.
What is gravity?
400
I can speed up an object, slow it down or change its direction.
What is force?
400
If two teams are playing tug a war and they apply an equal amount of force to the pulling effort A) The team with more people will win B) The teams will tie and have no movement C) They will both fall over
B) The teams will tie and have no movement
400
Which helps a skier stay on top of the water? A) friction B) relative position c) force
friction
400
I am used to cut, split or fasten things. I can be a zipper, a knife or even a nail.
What is is a wedge?
400
What happens to your weight as you move away from Earth, and why?
What is it decreases because gravity decreases.
500
A type of motion that includes both the force applied and a downward force due to gravity
What is projectile motion
500
The force acting on a falling object is _______.
What is gravity?
500
How much an object changes its direction and speed depends on how much ______ is used.
What is force.
500
I change the amount of force needed to move your grocery cart when I increase.
What is its mass?
500
I do not happen when nothing moves.
What is work?
M
e
n
u