All electromagnetic waves

Have the same speed in a vacuum

If an electron is given enough electrical or heat energy, the electron may

remain in the same energy level

fall down to a lower energy level

When an electron falls to a lower energy level, what is the result?

the electron is absorbed by the nucleus

the proton is absorbed by the nucleus

When looking at two different stars, a student notices that star A is bluish in color and star B is reddish in color. Which star has a higher temperature?

The blue star is hotter because blue light has a higher energy.

The blue star is hotter because blue light has a lower energy.

The red star is hotter because red light has a lower energy.

The red star is hotter because red light has a higher energy.

Each element has a different electron configuration and therefore

each element has a different set of emission lines

each element has the same set of emission lines

each element has different spacings between the same-colored lines

How do astronomers know what elements a star contains?

by comparing the absorption lines to the emissions lines of other elements

by observing the color of a star through a telescope

by taking samples from that star with satellites

by measuring the speed of the star

If a star's emission lines are redshifted, what can be said about the star's motion?

The star is moving away from earth.

The star is moving toward earth.

The star is oscillating back and forth.

Which is NOT a reason we use telescopes?

All of the above are reasons why we use telescopes.

to improve resolution and clarity of objects in the sky

to increase the brightness of objects in the sky

Which of the following is NOT a reason astronomers put large, expensive telescopes on mountains?

to avoid bad weather and clouds

to avoid light pollution from cities

because there is less atmosphere to look through

Compared to some ground-based telescopes, the Hubble telescope is able to take clearer pictures of objects in space because

the Hubble telescope is above Earth's atmosphere.

the Hubble telescope is much larger than any other telescope on the ground.

ground based telescopes are operated by humans and not by computers.

The product of wavelength and frequency of a wave is equal to

The distance between crests of the wave

Rigel is a blue star in the constellation of Orion, and Betelgeuse is a red star in the same constellation. Compared to these two stars, our Sun is

hotter than Betelgeuse, but cooler than Rigel.

hotter than Rigel, but cooler than Betelgeuse.

the same temperature as both stars.

Both reflecting and refracting telescopes are designed to

gather and focus visible light.

break visible light into colors of the spectrum.

separate visible light from ultraviolet and radio waves.

work better with short-wavelength radiation.

Reflecting telescopes differ from refracting telescopes in having

a mirror instead of an objective lens.

Each element on the periodic table can be identified by its

classification as a solid, liquid or gas.

ability to react to form compounds.

Light and Telescopes Unit 3 Test

Authored by Kailyn Jackman

Science

9th - 12th Grade

NGSS covered

Used 42+ times

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a telescope has 500 mm-f / 10 stamped on it, the aperture is

50 mm

500 mm

5000 mm

510 mm

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a type of telescope?

reflecting

refracting

infrared

all are types of telescopes

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The main difference between a reflecting and a refracting telescope is

reflecting telescopes are optical

refracting telescopes gather more light with a lens

reflecting telescopes gather and bend light toward a focus using a lens

refracting telescopes gather and bend light toward a focus using a lens

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following electromagnetic waves is lowest in energy?

microwaves

x-rays

infrared

visible light

Which of the following electromagnetic waves is highest in energy?

microwaves

x-rays

infrared

visible light

Which type of electromagnetic wave covers the smallest portion of the spectrum?

microwaves

x-rays

infrared

visible light

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which portion of the electromagnetic spectrum would an optical telescope use to display an image of a star?

microwaves

x-rays

infrared

visible light

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Light and Telescopes Unit 3 Test

If a telescope has 500 mm-f / 10 stamped on it, the aperture is

Which of the following is NOT a type of telescope?

The main difference between a reflecting and a refracting telescope is

Which of the following electromagnetic waves is lowest in energy?

Which of the following electromagnetic waves is highest in energy?

Which type of electromagnetic wave covers the smallest portion of the spectrum?

Which portion of the electromagnetic spectrum would an optical telescope use to display an image of a star?

Which portion of the spectrum could an astronomer use to detect temperature (heat) differences on the surface of a planet?

Of the visible spectrum, which color has the longest wavelength?

Of the visible spectrum, which color has the highest energy?

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