5.6C Light Flashcard

Front

What is a lens?

Back

A lens is a curved piece of glass or plastic that refracts light.

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical path that allows current to flow, necessary for devices like lamps to produce light.

Front

What type of lens curves inwards like the inside of a bowl?

Back

A concave lens.

Front

What type of energy does a solar-powered calculator use?

Back

Light energy.

Front

What is a prism?

Back

A prism is a clear, triangular device made of plastic or glass that refracts light.

Front

What does it mean to refract light?

Back

To refract light means to bend light as it passes from one medium to another.

Front

What is the difference between concave and convex lenses?

Back

Concave lenses curve inwards and diverge light, while convex lenses curve outwards and converge light.

Front

What is light energy?

Back

Light energy is the energy that is produced by light sources, such as the sun or light bulbs.

Front

What is an example of a device that uses a lens?

Back

A telescope uses lenses to magnify distant objects.

Front

What is the role of a lens in glasses?

Back

The role of a lens in glasses is to correct vision by refracting light to focus it properly on the retina.