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| 1 | |
What causes the rings around some planets?
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| | A) | chunks of ice and rock |
| | B) | asteroids |
| | C) | comets |
| | D) | gas giants |
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| 2 | |
What protects Earth from ultraviolet radiation?
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| | A) | the carbon dioxide layer |
| | B) | the ozone layer |
| | C) | space between Earth and the Sun |
| | D) | the asteroid belt |
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| 3 | |
What are groups of stars called?
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| | A) | nebulae |
| | B) | supernovas |
| | C) | galaxies |
| | D) | black holes |
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| 4 | |
What is the temperature of a star with a blue color?
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| | A) | the same as the Sun |
| | B) | hot |
| | C) | cool |
| | D) | medium for a star |
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| 5 | |
How many planets are in our solar system?
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| | A) | hundreds |
| | B) | three |
| | C) | nine |
| | D) | ten |
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| 6 | |
Which planets alternate as the farthest from the Sun?
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| | A) | Uranus and Neptune |
| | B) | Jupiter and Saturn |
| | C) | Neptune and Pluto |
| | D) | Earth and Venus |
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| 7 | |
How are the inner planets characterized?
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| | A) | large and wet |
| | B) | solid and rocky |
| | C) | small and soupy |
| | D) | gaseous and large |
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| 8 | |
Which star is the closest to Earth?
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| | A) | Alpha Centauri |
| | B) | the Sun |
| | C) | the Moon |
| | D) | Ursa Major |
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| 9 | |
How do stars begin?
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| | A) | when fusion begins in gas clouds in space |
| | B) | when white dwarfs start generating light again |
| | C) | when other stars become supernovae and shoot off smaller stars |
| | D) | They emerge from black holes. |
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| 10 | |
What causes the change in seasons?
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| | A) | the distance between Earth and the Sun |
| | B) | the rotation of Earth |
| | C) | the phases of the Moon |
| | D) | the tilt of Earth's axis |
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| 11 | |
How many seasons occur during one revolution of Earth?
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| | A) | three |
| | B) | four |
| | C) | two |
| | D) | one |
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| 12 | |
What is the order during a lunar eclipse?
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| | A) | Earth, Sun, Moon |
| | B) | Moon, Sun, Earth |
| | C) | Sun, Earth, Moon |
| | D) | Sun, Moon, Earth |
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| 13 | |
What causes a solar eclipse?
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| | A) | Earth's shadow on the Moon |
| | B) | the Moon's shadow on Earth |
| | C) | the Sun's shadow on Earth |
| | D) | Earth's shadow on the Sun |
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| 14 | |
How long does it take for Earth to complete one rotation?
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| | A) | 24 h |
| | B) | 1 month |
| | C) | 365 days |
| | D) | 1 year |
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| 15 | |
How far away is the Oort cloud, where comets possibly originate?
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| | A) | 1 AU |
| | B) | 100,000 light-years |
| | C) | 1 light-year |
| | D) | 100,000 AUs |
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| 16 | |
What will be the final state of the Sun?
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| | A) | black hole |
| | B) | supernova |
| | C) | white dwarf |
| | D) | black dwarf |
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| 17 | |
The lower the apparent magnitude number is, the __________.
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| | A) | dimmer the star is |
| | B) | dimmer the star looks from Earth |
| | C) | brighter the star looks from Earth |
| | D) | brighter the star is |
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| 18 | |
What unit is used to measure distance within our solar system?
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| | A) | astronomical unit |
| | B) | miles |
| | C) | kilometer |
| | D) | light-year |
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| 19 | |
How large are meteorites?
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| | A) | several miles in diameter |
| | B) | smaller than pebbles |
| | C) | 1 AU wide |
| | D) | They can be as small as a pebble as large as several tons |
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| 20 | |
What unit is used to measure distance outside Earth's solar system?
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| | A) | kilometer |
| | B) | light-year |
| | C) | miles |
| | D) | astronomical unit |
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