Exam Review

Front

What word means "NOT see-through?"

Back

Opaque: A term used to describe materials that do not allow light to pass through.

Front

What happens to the thermal energy and molecular motion of a hot cup of tea left in a cooler room?

Back

The thermal energy decreases and molecules move more slowly.

Front

What is the energy of motion called?

Back

Kinetic Energy: The energy that an object possesses due to its motion.

Front

Kinetic Energy is the energy of _________.

Back

Movement: Kinetic energy is directly related to the speed and mass of an object.

Front

How would you describe the path of light?

Back

A straight line: Light travels in straight lines unless it is reflected or refracted.

Front

What is thermal energy?

Back

Thermal Energy: The total energy of all the particles in an object, related to temperature.

Front

What is the difference between kinetic energy and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on position.

Front

What is the formula for kinetic energy?

Back

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

Front

What happens to the kinetic energy of an object if its speed doubles?

Back

The kinetic energy increases by a factor of four, since KE is proportional to the square of the speed.

Front

What is the definition of opaque materials?

Back

Opaque materials do not allow light to pass through, making them impossible to see through.