Science Ch 9.6 - 9.8 Outer Space

Compared to other stars, the sun is (a)   .

• very large
• very small
• average-sized

Answer explanation

The sun's closeness to the Earth makes it appear to be a very large star, but compared to some stars, it's only average-sized.

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What is the sun made entirely of?

• hot, glowing gases

• hot, glowing liquids

• hot, glowing solids

The sun gives off a steady supply of (a)   as it burns.

• energy
• gravity
• electricity

Answer explanation

The sun gives off almost exactly the same amount of light and heat energy.

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The sun has (a)   gravity than the Earth.

• less

• the same

• more

Answer explanation

Because the sun is much larger than the Earth, it has a much stronger pull of gravity.

Match the following terms to their definitions.

• Nonluminous Object

• An object that orbits a planet or star

• Satellite

• A heavenly body that orbits a planet

• Moon

• An object that does not give off its own visible light

• Luminous Object

• An object that gives off it's own visible light

• Illuminated Object

• An object that is seen as the result of reflected light

Label the phases of the lunar cycle of the moon.

g

h

f

d

b

a

c

e

Quarter 1

Gibbous 2

Quarter 2

New

Crescent 2

Gibbous 1

Full

Crescent 1

Answer explanation

The phases of the lunar cycle are always the same pattern: new, crescent, quarter, gibbous, full, gibbous, quarter, crescent, new.

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What is the Earth's only natural satellite?

• Sun
• Moon
• Mars
• Venus

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Match the following terms to their definitions.

• Space station

• The flight and space science agency of the U.S. government

• Space shuttle

• A satellite in which astronauts can live for months at a time

• Space probe

• The first type of rocket-launched spacecraft designed to be reused

• NASA: National Aeronautics & Space Admin

• An unmanned spacecraft that collects pictures and data in space

Answer explanation

NASA stands for National Aeronautics and Space Administration

In 1969, (a)   took the first people, Neil Armstrong and Buzz Aldrin, to walk on the moon.

• Challenger

• Apollo 11

• SpaceX

A space rocket (a)   a spacecraft to go into outer space.

• does not allow

• allows

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