6.E.1.3 Space Exploration Test Review

Why do scientists send radio waves into space?

• to transmit materials to the moon

• to contact life on other planets

• to break apart meteoroids

• to take photos of the sun

Which choice best describes a space station?

• a structure astronauts use for travel into space

• a structure on Earth that astronauts use to study space

• a structure that allows astronauts to view faraway objects in space

• a structure that allows astronauts to extend the time they can stay in space

What was the main advantage of using space shuttles, instead of rockets, for space exploration?

• Scientists could study other planets.

• Permanent orbits could be established.

• The same vehicle could be used multiple times.

• Items could be brought back to Earth from space.

Which statement best explains how the gravity-assist concept is used to allow spacecraft to successfully travel into space and return to Earth?

• It is helpful in planning a designated landing spot for the spacecraft.

• It guarantees spacecraft will not enter the moon’s gravity.

• It is helpful in planning the route of the spacecraft.

• It guarantees a spacecraft will return safely.

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What have scientists learned from space exploration?

• Life exists on other planets.

• Water can be found on all planets.

• All planets have an atmosphere like Earth’s.

• At least eight planets are in the solar system.

Which is the most likely reason for placing an artificial satellite in orbit around Earth?

• to allow global radio communication

• to allow for the study of Earth’s core

• to collect dust samples from comets and meteors

• to carry astronauts to the International Space Station

Which object in space did NASA’s Apollo program study?

• a star

• the sun

• the moon

• an asteroid

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What did early astronomers like Copernicus discover about the solar system?

• All planets have moons.

• Earth is the only planet affected by gravity.

• The sun is at the center of the solar system.

• The moon is at the center of the solar system.

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What keeps a satellite in orbit around Earth?

• Earth’s gravity

• Earth’s atmosphere

• Earth’s solar system

• Earth’s magnetic field

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Which robotic spacecraft does not orbit Earth but is able to explore further into outer space?

• space observatory

• space satellite

• space station

• space probe