Observing Our Sky Review

Why does the Sun appear brighter than other stars?

• It is larger than other stars.

• It is closer to Earth.

• It is hotter than other stars.

• It is older than other stars.

What affects how bright a star looks from Earth?

• Color and temperature

• Distance and size

• Age and composition

• Speed and direction

What is the predictable pattern that the Moon follows?

• Weather changes

• Tides

• Phases

• Eclipses

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Which phase of the Moon is not visible?

• Full Moon

• First Quarter

• Last Quarter

• New Moon

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How long does the Moon's cycle of phases take?

• 15 days

• 29.5 days

• 45 days

• 60 days

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Why do we see different constellations at different times of the year?

• Earth's rotation

• Earth's movement around the Sun

• Changes in the atmosphere

• The Moon's phases

What causes the length of daylight to change?

• The Moon's phases

• Earth's rotation on its axis

• Earth's axial tilt during its revolution around the sun

• The Sun's brightness

What does gravity do?

• Pushes objects away from Earth

• Pulls objects toward the center of the Earth

• Keeps objects stationary

• Causes objects to float

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Which of the following is the best example of gravity at work?

• A balloon floating

• A ball rolling down a ramp

• A leaf staying in the air

• A feather floating

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What causes day and night?

• Earth's revolution around the Sun

• Earth's rotation on its axis

• The Moon's phases

• The Sun's movement