Why is the distance betweenEarth and the sun MOST important?

• The distance prevents solar flares from reaching Earth's atmosphere.

• The distance is the source of Earth's magnetic field.

• The distance causes the different seasons on Earth.

• The distance contributes to Earth's ability to support life.

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As planets revolve around distant stars, they block some of the light from reaching the Kepler space telescope. The telescope measures changes in the brightness of stars as planets move in front of them. How has the Kepler telescope improved our understanding of the universe?

• It has aided in the discovery of planets outside the solar system.

• It has aided in the discovery of planets inside the solar system.

• It has aided in the discovery of life outside the solar system.

• It has aided in the discovery of life inside the solar system.

What causes the summer to be the warmest season?

• The Earth's tilt causes the shortest days with the most intense sunlight.

• The Earth's tilt causes the longest days with the most intense sunlight.

• The Earth's tilt causes the longest days with the least intense sunlight.

• The Earth's tilt causes the shortest days with the least intense sunlight.

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Why does Earth have different seasons?

• because of the distance between Earth and the Sun

• because of the speed of Earth as it rotates on its axis

• because of the amount of light blocked by the moon on its axis

• because of the tilt of earth on its axis as it moves around the sun

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Which BEST explains why the moon has phases?

• The moon's position changes in relation to the sun and Earth.

• The sun's position changes in relation to the moon and Earth.

• The Earth casts a shadow on the moon as it rotates.

• The moon rotates along its axis.

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Which factor makes Earth different from all the other planets in the solar system in its ability to support life?

• The Earth is exposed to rays from the sun.

• The Earth has only one moon that orbits around it.

• The Earth rotates in an elliptical orbit around the sun.

• The Earth has a breathable atmosphere.

Which represents information that is gained as a result of space exploration?

• weather and climate patterns that occur on Earth

• existence of the sun and the moon in the solar system

• how to use coal and natural gas as energy resources

• location of plates found upon Earth's surface

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Why are high and low tides on Earth?

• They are due to changes in the moon's tilt on its axis.

• They are due to the gravitational pull between Earth and the moon.

• They are due to the magnetic force between Earth and the moon.

• They are due to changes in the moon's speed every month.

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Which contributes to Earth's ability to sustain life?

• The atmosphere allows all of the sun's radiation to enter due to Earth's distance from the sun.

• The atmosphere prevents all space debris from reaching the surface due to the ozone layer.

• The atmosphere is extremely thin due to the temperatures of the sun.

• The atmosphere is breathable due to the unique mixture of gases.

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How does gravity support life on Earth?

• by forcing Earth to continuously spin on its axis, which contributes to day and night

• by causing changes in the distance between Earth and the sun, which contributes to the seasons

• by keeping water and gases in the atmosphere close to Earth's surface, which contributes to life processes

• by preventing meteors and comets from hitting Earth's surface which protects living organisms from space fragments

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