Physical Science Test Flashcards
1
Q
What is Friction
A
Friction is a force applied to an object when it moves against the surface of another object.
2
Q
How do magnets attract?
A
They are opposite poles
3
Q
How do magnets repel each other?
A
They are the same poles.
4
Q
What are contact forces?
A
They are forces that touch objects in order for them to happen
5
Q
What are non-contact forces?
A
They are forces that don’t need to touch for them to happen
6
Q
What causes a boat to float?
A
When two forces are balanced
7
Q
How do you find density?
A
Mass x Weight
8
Q
What is a first class lever?
A
A lever with the pivot n between the effort and the load.
9
Q
What is a second class lever?
A
A lever that has the load between the pivot and the effort
10
Q
What is a third class lever?
A
A lever where the effort is between the load and the pivot
