18.2 Telescopes

Front

What is a focal point?

Back

The point where rays of light pass through a lens or reflect from a mirror come together.

Front

What is one of the disadvantages of refracting telescopes?

Back

They can cause images to look fuzzy because the lens can bend under its own weight.

Front

What advantage did Galileo have over earlier astronomers?

Back

He improved the telescope and was able to see more stars and more details of planets.

Front

How does the objective lens differ from the eyepiece lens?

Back

The objective lens collects light, while the eyepiece lens magnifies the image.

Front

Why are telescopes sometimes put in space?

Back

To avoid the motion of the air in the Earth's atmosphere.

Front

What is a refracting telescope?

Back

A telescope that uses lenses to gather and focus light.

Tags

NGSS.MS-PS4-2

Front

What is a reflecting telescope?

Back

A telescope that uses mirrors to gather and focus light.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Front

What is the purpose of the eyepiece in a telescope?

Back

To magnify the image formed by the objective lens.

Front

What is chromatic aberration?

Back

A distortion in images caused by different wavelengths of light being focused at different points.

Tags

NGSS.HS-PS4-1

Front

What is the significance of the Hubble Space Telescope?

Back

It has provided clear images of distant galaxies and other astronomical phenomena without atmospheric interference.

Tags

NGSS.HS-PS4-5