Energy Forms & Transfomations

(a)   states that energy cannot be created or destroyed, only transformed.

• Law of Conservation of Energy
• Newton's First Law
• Law of Thermodynamics
• Law of Motion

Answer explanation

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another. This principle is fundamental in physics and distinguishes it from other laws.

Tags

NGSS.HS-PS3-1

Match the following types of energy with the way they are produced.

• Energy produced by electromagnetic waves

• Kinetic energy

• Energy produced due to the vibration of particles

• Radiant energy

• Energy due to motion of objects

• Sound energy

• Energy stored due to position or state

• Potential energy

Answer explanation

Sound energy is produced by the vibration of particles in a medium, creating waves that we perceive as sound. Other types of energy, like kinetic and potential, do not specifically arise from particle vibrations.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS4-1

Match the following types of energy with the devices that primarily emit them.

• Electric heater

• Chemical energy

• Speaker

• Electrical energy

• Light bulb

• Sound energy

• Battery

• Light energy

Answer explanation

A light bulb primarily emits light energy when electrical energy is converted into light through the process of incandescence or fluorescence. Therefore, the correct answer is light energy.

The form of energy stored in gasoline is (a)   .

• Chemical energy
• Thermal energy
• Kinetic energy
• Electrical energy

Answer explanation

Gasoline contains chemical energy, which is stored in the bonds between atoms in its molecules. When gasoline is burned, this energy is released as heat and light, making chemical energy the correct choice.

Match the following types of energy with the correct example.

• Energy from a battery powering a device

• Light energy

• Energy represented by moving air from a fan

• Chemical energy

• Energy from a glowing bulb

• Kinetic energy

• Energy stored in food

• Electrical energy

Answer explanation

Moving air from a fan represents kinetic energy, as it is the energy of motion. The fan converts electrical energy into kinetic energy, which is then used to move air.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What type of energy is used to power a moving car?

• Kinetic energy

• Chemical energy

• Electrical energy

• Thermal energy

Answer explanation

A moving car primarily uses kinetic energy, which is the energy of motion. While chemical energy powers the car initially (from fuel), the energy that keeps it moving is kinetic.

Tags

NGSS.MS-PS3-1

What form of energy is stored in batteries?

• Electrical energy

• Chemical energy

• Thermal energy

• Kinetic energy

Answer explanation

Batteries store energy in the form of chemical energy, which is converted to electrical energy when the battery is used. This process involves chemical reactions that release energy.

Match the following types of energy with their correct examples.

• Energy carried by light waves

• Nuclear Energy

• Energy stored in the nucleus of an atom

• Thermal Energy

• Energy due to the temperature of a substance

• Sound Energy

• Energy produced by vibrating objects

• Electromagnetic Energy

Answer explanation

Nuclear energy is a form of potential energy stored in the nucleus of atoms. It has the potential to be released during nuclear reactions, unlike sound, thermal, or electromagnetic energy, which are forms of kinetic energy.

Match the following types of energy with their correct descriptions.

• Energy stored due to an object's position or state

• Nuclear Energy

• Energy stored in the bonds of molecules

• Kinetic Energy

• Energy associated with motion

• Potential Energy

• Energy released during atomic reactions

• Chemical Energy

Answer explanation

Kinetic Energy is the type of energy associated with motion. It is the energy an object possesses due to its movement, unlike Potential Energy, which is stored energy, and Chemical and Nuclear Energy, which are related to bonds and reactions.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

What is the primary energy transformation in a wind turbine?

• Mechanical energy to electrical energy

• Electrical energy to mechanical energy

• Thermal energy to chemical energy

• Light energy to chemical energy

Answer explanation

In a wind turbine, the primary energy transformation occurs when the kinetic energy of the wind is converted into mechanical energy through the turbine blades, which is then transformed into electrical energy by the generator.