Test #5 - Energy, Work, Power, Simple Machines

Front

What is the process by which green plants convert sunlight into food?

Back

Photosynthesis: The process where plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is the correct order of energy transformations in photosynthesis?

Back

Light → Chemical

Front

What is work in physics?

Back

Work is done when a force is exerted on an object and the object moves in the direction of the force.

Front

True or False: You do work only when you exert a force on an object and move it.

Back

True

Front

What is kinetic energy?

Back

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

Front

What two factors affect an object's kinetic energy?

Back

Mass and speed.

Front

In an energy pyramid, which level has the least amount of energy available?

Back

Top predators.

Front

What is potential energy?

Back

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

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier.