Physics

Light is made up of particles called photons.

Humans emit infrared radiation, which is a type of electromagnetic radiation that is invisible to the human eye but can be felt as heat.

Microwaves use electromagnetic radiation, specifically microwaves, to cook food.

Lead or concrete shielding is typically required to protect against gamma radiation. Lead is a commonly used material due to its high density and ability to absorb gamma rays effectively.

Sound waves are mechanical waves, which means they require a medium, such as air or water, to travel through.

The type of wave that moves through matter and vibrates your eardrums is called a sound wave.

The type of wave that requires a medium to propagate and cannot travel through a vacuum is called a mechanical wave.

The tuning fork produces sound waves when it vibrates in air.

The type of force needed to overcome the inertia of an object is an external force. Inertia is the tendency of an object to resist changes in its motion, so an external force is required to overcome this resistance and cause the object to move.

The type of force used when an object is spinning is called centripetal force.

The force responsible for holding up a lamp hanging from the ceiling is called tension force.

Ultraviolet (UV) light bulbs emit UV rays.

The type of light you emit is called incandescent light, and the term for the heat emitted along with it is called infrared radiation.

The sun emits visible light most strongly, which is the type of light that is visible to the human eye.

Intense heat from sources like a blowtorch or a high-powered laser can cause glass to melt.

An electric current passing through a conductor generates a magnetic field.

Materials that absorb light are typically opaque and have a high level of pigmentation or density. These materials absorb light by converting it into heat energy or by exciting their electrons, causing them to jump to higher energy levels. Examples of materials that absorb light include black paper, dark fabrics, and certain metals like iron and nickel.

A concave mirror can create a real image.

A switch is commonly used to easily start and stop the flow of electrical current.

Potential energy can be converted to kinetic energy when it is used to do work.

A car uses chemical energy from gasoline or electricity to operate.

A photon in a quantum has electromagnetic energy.

Any object above absolute zero gives off thermal energy in the form of heat radiation.

Electromagnetic waves carry electromagnetic energy.

The type of energy involved in the motion of a top spinning is kinetic energy.