Physical Science 2nd Benchmark Review 24.25

Front

What is a gear?

Back

A gear is a wheel with teeth that interlocks with other gears to transmit torque and rotational motion.

Front

What energy transfer occurs when food is digested?

Back

The energy transfer that occurs when food is digested is from chemical energy to mechanical energy.

Front

What energy transformation occurs during photosynthesis?

Back

The energy transformation that occurs during photosynthesis is from radiant energy to chemical energy.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots about a fixed point called a fulcrum.

Front

What kind of energy is represented in the picture?

Back

Chemical energy is the energy stored in the bonds of chemical compounds.

Front

Define potential energy.

Back

Potential energy is the energy stored in an object due to its position or state.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a wheel on an axle or shaft designed to support movement and change the direction of force.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied to it.