Energy and Force Flashcards
1
Q
What is the definition of energy?
A
Energy is the ability of an object to perform a task
2
Q
Name the 9 forms of energy
A
Light, heat, kinetic, gravitational, chemical, electrical, sound, elastic, nuclear
3
Q
What can forces do?
A
Forces can change the shape, size, speed and direction of an object.
4
Q
What are contact forces?
A
Contact forces need to touch the thing that they are affecting
- Friction
- Air resistance
- Upthrust
- Water resistance
5
Q
What are non-contact forces?
A
Non-contact forces do not need to touch the thing they are affecting.
- Gravity
- Magnetism
- Static electricity
6
Q
What is used to measure force?
A
A force meter or a spring balance
7
Q
What are forces measured in?
A
Newtons (N)
8
Q
What is friction?
A
When one object slides over another object, friction is the thing to slow it down.
