Friction
Gravity
Energy
Grab Bag
Force
100
True or False. A bike on grass is a form of friction?
What is true?
100
True or False: Does gravity hold us on the earth?
What is True
100
Kinetic energy + potential energy=
mechanical energy
100
To measure force you use this tool
What is a spring scale?
100
What is force?
Any push or pull on an object
200
A force that keeps two objects that are touching from easily sliding past each other
What is friction?
200
What is the measurement of the force of gravity on an object? A. Leather Belt B. Weight C. Friction D. Acceleration
What is weight
200
The energy of motion or movement
what is kinetic energy?
200
Mass is measured in ________.
What is grams?
200
A unit of force
Newton
300
True or False: Friction decreases speed.
True
300
True or False: A soccer ball would keep going, if gravity didn't act on the soccer ball.
True
300
Energy something has because of its position (still)
What is potential energy?
300
A combination of two or more substances that retain their own properties.
What is a mixture?
300
True or False: To go faster on a skateboard you need to push it with less force.
False
400
A moving object will do this when friction is increased.
What is slow down?
400
What kind of force causes a ball to fall down when you throw it in the air?
gravitational force (gravity is also accepted)
400
The pedals on a bike creates this kind of energy.
What is mechanical energy?
400
Name two metals a magnet is attracted to.
Iron and steel
400
The less mass an object has, the less _____ is needed to move it.
What is force?
500
True or False: a desk has more friction than the carpet.
False
500
Which object takes more force to move: a rock or a ball of paper?
a rock
500
Rubbing your hands together very quickly releases this kind of energy.
Heat energy
500
Two or more substances that mix together evenly
What is a solution?
500
If two opposite forces are working on the same object, what will happen?
The object won't move.
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