Science energy and waves

What is thermal energy?

Thermal energy is the internal energy in a system due to the movement and vibration of its atoms and molecules

What is temperature?

Temperature is a physical measure of how hot or cold an object, substance or environment is

What is the difference between temperature and thermal energy

Temperature is the measure of the average kinetic energy of the particles in a substance. Thermal energy is the total kinetic and potential energy of all the particles combined

What is conduction?

The transfer of thermal energy through direct physical contact between atoms or molecules

What are some examples of conduction

Metal spoon in a hot drink and cooking on a stove

What is convection?

The transfer of heat through movement of a fluid caused by temperature and dnesity differences

What are examples of convection

Boiling water and convection ovens

What is heat transfer in heat radiation?

The process by which thermal energy is transferred through electromagnetic waves

Examples of radiation heat transfer

The sun and campfires

How does sound and electrical energy transfer?

Sound waves go through mechanical waves in matter and electrical energy through the electric charge through circuits

what forms of energy transfers need a medium to travel through

Conduction, convection and mechanical waves

what forms of energy transfers DO NOT need a medium to travel through

Radiation

What are mechanical waves

A mechanical wave is a disturbance that travels through a medium, transferring energy from one place to another

What are electromagnetic waves?

Waves that transfer energy and can travel through empty space without a medium.

Parts of a wave: What is wavelength?

The distance between two matching points on a wave such as one crest to the next crest

Parts of a wave: What is amplitude

Amplitude is the maximum height of a wave measured from it’s resting position

Parts of a wave: What is trough

The trough is the lowest point of a wave

Parts of a wave: What is the crest?

The highest point of a wave

What are different types of electromagnetic radiation

Radio waves, microwaves, visible light and x rays

What is compression in longitudinal waves?

Areas where particles are squashed close together

What is rarefactions in longitudinal waves?

Areas where particles are spread far apart