8th Grade DCP Review

A star that is several thousand times brighter than the sun with a temperature that is higher than 30,000 K would most likely be classified as —

• a main-sequence star in spectral class O

• a giant in spectral class K

• a main-sequence star in spectral class M

• a supergiant in spectral class B

The universe has many different components. Which list places four components of the universe in the most likely order from smallest to largest?

• Planets, stars, galaxies, nebulae

• Nebulae, stars, planets, galaxies

• Galaxies, stars, planets, nebulae

• Planets, stars, nebulae, galaxies

Four students are asked to describe a nebula and a star. Their responses are shown in the table above. Which student described these two celestial bodies correctly?

• Student 1

• Student 2

• Student 3

• Student 4

From the Earth, the sun appears to be brighter than all of the other stars. Why does the sun appear brighter than all other stars in the universe?

• The sun is the star that has the highest temperature.

• The sun is the largest star in the universe.

• The sun is the star that is closest to the Earth.

• The sun is the only yellow star in the universe.

What is the correct order in which the seasons occur?

• Spring, Summer, Winter, Fall

• Summer, Winter, Fall, Spring

• Winter, Fall, Spring

• Spring, Summer, Fall, Winter

The Earth is tilted 23 ½ degrees on its axis. The direction of the Earth’s tilt does not change throughout its orbit. At which position of Earth is it summer in the northern hemisphere?

• W

• X

• Y

• Z

Which of these is caused by the rotation of Earth?

• Tides

• Days and nights

• Spring and fall

• Rainfall

Which statement describes the positions of Earth when Texas has the most daylight hours?

• Texas has the most daylight hours at position 1, when it is summer.

• Texas has the most daylight hours at position 2, when it is winter.

• Texas has the most daylight hours at position 3, when it is summer.

• Texas has the most daylight hours at position 4, when it is winter.

What is the order in which the moon phases occur?

• New Moon > Waxing Crescent > First Quarter > Waxing Gibbous > Full Moon > Waning Gibbous > Third/Last Quarter > Waning Crescent

• Full Moon > Waning Gibbous > Third/Last Quarter > Waning Crescent > New Moon > Waxing Crescent > First Quarter > Waxing Gibbous

• Waning Gibbous > Third/Last Quarter > Waning Crescent > New Moon > Waxing Crescent > First Quarter > Waxing Gibbous > Full Moon

Which of the of the following moon phases

is visible from Earth when the moon is in

position 8?

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