properties of a star, science homework help

Question 1 (1 point)Which property of a star can be determined from its color?

a

mass

b

stellar distance

c

surface temperature

d

volume

Question 2 (1 point)Which main sequence stars are the least massive?

a

blue

b

orange

c

red

d

yellow

Question 3 (1 point)The sun belongs to which class of stars?

a

black hole

b

main sequence

c

red giant

d

white dwarf

Question 4 (1 point)Which terrestrial planet has a surface landscape similar to that of the older areas of the Earth’s moon?

a

Mercury

b

Neptune

c

Uranus

d

Venus

Question 5 (1 point)What can astronomers determine based on the observed red shifts in the spectral lines of distant galaxies?

a

Earth is in the center of the universe.

b

The universe is contracting.

c

The universe is expanding.

d

The universe is in a steady state.

Question 6 (1 point)Which of these discoveries led to the modern view of the solar system regarding the orbits of the planets?

a

circles

b

ellipses

c

hyperbolas

d

parabolas

Question 7 (1 point)Which features are found on both Mars and Earth?

a

active volcanoes

b

erosional features related to flowing water

c

impact craters preserved from early in the planets’ histories

d

oceans

Question 8 (1 point)When a medium-sized, main sequence star, like our sun, has exhausted the fuel in its inner region, it becomes which type of star?

a

black dwarf

b

black hole

c

brown dwarf

d

red giant

Question 9 (1 point)What is used to determine the distances to the stars?

a

emission nebulae

b

fluorescence

c

stellar mass

d

stellar parallax

Question 10 (1 point)The apparent backward “drift” of the planets compared to the background stars is known by what term?

a

occultation

b

precession

c

Ptolemaic motion

d

retrograde motion

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