Energy Flashcards
1
Q
What is energy?
A
The ability to do work.
2
Q
What is kinetic energy?
A
The energy of motion.
3
Q
Does anything move without energy?
A
No
4
Q
What two things can affect the kinetic energy of something?
A
Its mass, and its velocity.
5
Q
What is mass usually measured in?
A
kilograms (kg).
6
Q
What is velocity usually measured in?
A
meters per second (m/s).
7
Q
What is the unit for kinetic energy?
A
Joules.
8
Q
Potential energy is what type of energy?
A
Stored energy.
9
Q
Things sitting up high have a higher potential energy than objects sitting on what?
A
The ground.
10
Q
What is elastic energy?
A
Energy that can be stored in bowstrings, springs, and rubber bands.
11
Q
You can change the shape of elastic objects by doing what?
A
By stretching them.
