Unit 3: Energy and Energy Transformations Review

Front

What type of heat transfer takes place in liquids and gases?

Back

Convection is the type of heat transfer that occurs in liquids and gases, where warmer areas of a liquid or gas rise and cooler areas sink, creating a circulation pattern.

Front

What energy is given off when a cell phone RINGS?

Back

Sound energy is the energy produced when a cell phone rings, as it creates vibrations in the air that we perceive as sound.

Front

At which point is kinetic energy greatest? (Options: W, X, Y, Z)

Back

Kinetic energy is greatest at point X, where the object is moving the fastest.

Front

What are the energy transformations when I plug in my radio and it begins playing?

Back

The energy transformations are from electrical energy to sound energy.

Front

Which item transforms electrical energy into thermal energy and light energy?

Back

A toaster transforms electrical energy into thermal energy (heat) and light energy (glow).

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, including kinetic, potential, thermal, and sound energy.

Front

Define kinetic energy.

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass and speed of the object.

Front

Define potential energy.

Back

Potential energy is the stored energy in an object due to its position or state. For example, a book on a shelf has gravitational potential energy.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as sunlight warming the Earth.