_______ is a push or pull.

• Motion

• Force

• Gravity

• Energy

The strength of the force of gravity between two objects depends on _______ and _______.

• Mass and time

• Distance and time

• Mass and distance

• Speed and distance

_______ pulls objects towards the center of the Earth.

• Gravity

• Force

• Motion

• Friction

Two factors that affect friction are _______________.

• Weight and height

• Temperature and pressure

• Distance and the amount of force

• Surface type and speed

• Surface type and the amount of force

Without friction, a moving object would not _______ until it strikes another object.

• Stop

• Change direction

• Start

• Accelerate

• Decelerate

Identify the energy transformation from a battery to a flashlight.

• Chemical to light

• Electrical to thermal

• Mechanical to sound

• Nuclear to chemical

Identify the energy transformation from an electrical outlet to a television.

• Electrical to sound and light

• Chemical to mechanical

• Thermal to nuclear

• Sound to electrical

Identify the energy transformation from food to cycling.

• Chemical to mechanical

• Electrical to thermal

• Light to sound

• Nuclear to electrical

Heat flows from ________ objects to ________ objects due to differences in Temperature.

• Colder to hotter

• Left to right

• Hotter to colder

__________, __________ and __________ are types of heat transfer.

• Radiation, convection and sugar

• Conduction, radiation, heat

• Convection, conduction and radiation