Light and Telescopes

Front

What is the longest wavelength and lowest frequency wave used in communications and radar?

Back

Radio wave

Front

Which type of electromagnetic wave is used to cook food and is difficult to observe from the ground?

Back

Microwave

Front

What is the relationship between wavelength, frequency, and energy for waves?

Back

A wave with a short wavelength will have a high frequency and high energy.

Front

What is a particle of visible light called?

Back

Photon

Front

What theory states that electromagnetic radiation can be treated as either a particle of light or a wave?

Back

Wave-particle duality

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (or about 186,282 miles per second).

Front

What is the electromagnetic spectrum?

Back

The range of all types of electromagnetic radiation, from radio waves to gamma rays.

Front

What is the primary function of a telescope?

Back

To collect and magnify light from distant objects.

Front

What is the difference between a refracting telescope and a reflecting telescope?

Back

A refracting telescope uses lenses to bend light, while a reflecting telescope uses mirrors to reflect light.

Front

What is the significance of the Hubble Space Telescope?

Back

It has provided some of the most detailed images of distant galaxies and has contributed to our understanding of the universe.