Celestial bodies quiz

An astronaut is on a space walk outside the shuttle. Which necessary item is the astronaut in the picture missing? (Hint: Step 1. Recall what astronauts need to protect themselves in space, particularly on a spacewalk. Step 2. Identify which of these things is missing.)

• tools

• tethers

• oxygen

• heat shields

2. How does an astronaut on a spacewalk communicate with astronauts in the spacecraft?

• A. using sign language

• B. by cellular telephone

• C. through radio waves from Earth

• D. through a radio transmitter and receiver

3. Which of the following spacecraft is designed to collect data by landing on distant planets?

• satellite

• space shuttle

• space station

• landing rover

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4. Study the picture of the space shuttle.What is the purpose of the part labeled A?

• A. to safely get astronauts into space

• B. to propel the shuttle past Earth’s gravity

• C. to provide a boost to the launching spacecraft

• D. to make sure the spacecraft can escape orbital velocity

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5. The angle of reentry of a spacecraft is important. Which arrow indicates an angle of reentry that is most likely to cause the spacecraft to bounce back into space?

• 1

• 2

• 3

• 4

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6. Which of the following accommodations that allow space exploration are required by the astronauts shown below as they work outside the International Space Station?

• water

• gravity

• oxygen

• heat protection

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7. Ozone exists in Earth’s atmosphere. How does ozone protect living things on Earth?

• A. It creates heat energy.

• B. It produces water vapor.

• C. It reflects ultraviolet radiation.

• D. It changes into oxygen molecules.

8. Why is the sun necessary for plants to live on Earth?

• A. Plants convert the sun’s energy into food.

• B. Plants convert the sun’s energy into water.

• C. Plants convert the sun’s energy into nitrogen.

• D. Plants convert the sun’s energy into carbon dioxide.

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9. Which of the following is one of the main reasons that Earth has a much thicker atmosphere than Mars and Mercury do? (Hint: Step 1. Recall how Mars and Mercury are different from Earth. Step 2. Recall the factors that help Earth keep its atmosphere.)

• A. Mars and Mercury have less water than Earth.

• B. Mars and Mercury both rotate faster than Earth.

• C. Mars and Mercury are both closer to the sun than Earth.

• D. Mars and Mercury have much less gravitational pull than Earth.

What unique characteristic of Earth allows water to be found in the states shown here?

• A. Earth’s clouds

• B. Earth’s atmosphere

• C. Earth’s polar ice caps

• D. Earth’s rotation and distance from the sun

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