Question

a push or a pull is called _______. * 2 points
○ motion
○ force
○ an argument

a change in position is called _______. * 2 points
○ motion
○ inertia
○ friction

when things slide or roll over each other, _______ occurs. * 2 points
○ gravity
○ friction
○ something

heat energy can be produced by _______ energy. * 2 points
○ nuclear
○ electric

Explanation:

1. A push/pull is defined as force.
2. Position change is the definition of motion.
3. Sliding/rolling between objects creates friction.
4. Electric energy can convert to heat energy (e.g., electric heaters).

Answer:

1. force
2. motion
3. friction
4. electric