Unit 5 Astronomy Review

Which scientist determined that the farther a planet is from the sun, the longer it takes to orbit the sun?

• Copernicus

• Halley

• Kepler

• Doppler

Which of the following is true for both gas planets and terrestrial planets?

• They have moons orbiting them.

• They are a round shape.

• They have rings.

• They rotate in the same direction.

Which statement regarding the moon is true?

• The maria are older as evidenced by their low crater density.

• The maria are younger as evidenced by their high crater density.

• Highlands are older as evidenced by their high crater density.

• Highlands are younger as evidenced by their low crater density.

Which of the following would you expect to see in the death of a star that is less than 0.5 solar mass?

• supernova

• white dwarf

• red giant

• planetary nebula

Which type of radiation would you look for in a star to demonstrate that nuclear fusion was occurring inside?

• visible light

• gamma rays

• infrared radiation

• radio waves

Which object would best be identified by a periodic Doppler shift in a star’s spectrum along with a dip in the star’s light intensity?

• black hole

• nebula

• comet

• planet

During which season and at what latitude does the sun not set?

• winter and greater than 66°N

• fall and 23°N

• spring and 0°N

• summer and greater than 66°N

Which classification describes the Milky Way?

• irregular

• barred spiral

• regular spiral

• elliptical

Which explanation of the solar system best fits the observations of the planets and how they orbit the sun?

• The gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets.

• The planets formed at the center of a collapsing spinning cloud of gas and dust.

• The sun and planets formed from a collapsing spinning cloud of gas and dust.

• A comet hit the sun and sent off fragments that became the planets.

Which path is the correct path of light through a reflecting telescope?

Responses

• eyepiece→ primary mirror→ secondary mirror→ eye

• secondary mirror→ primary mirror→ eye→ eyepiece

• primary mirror→ eyepiece→ secondary mirror→ eye

• primary mirror→ secondary mirror→ eyepiece→ eye