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

• Illuminated Object

• A heavenly body that orbits a planet

• Moon

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

• Luminous Object

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

• Satellite

• 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

New

Quarter 2

Crescent 1

Quarter 1

Gibbous 2

Full

Crescent 2

Gibbous 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.

• NASA: National Aeronautics & Space Admin

• An unmanned spacecraft that collects pictures and data in space

• Space probe

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

• Space shuttle

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

• Space station

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

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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