Twenty Questions

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Twenty Questions

• Subject UNIT 8

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Twenty Questions
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Which planet would be the coldest?

• A. a planet 58 million km away from sun
• B. a planet 228 million km away from sun
• C. a planet 227 million km away from sun

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2. Which of the following allows Earth to have
an atmosphere and support life?

• A. a heated core
• B. blue skies and green grass
• C. surface temperatures

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3. What does the ozone layer do?

• A. attracts solar energy
• B. absorbs ultraviolet radiation
• C. makes rain

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4. What do all living things need to survive
besides oxygen and carbon dioxide?

• A. gravity
• B. water
• C. pancakes

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5. Which planet has the most gravity?

1. Mercury
2. Jupiter
3. Uranus

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6. A planet in another solar system would need
which of the following to sustain life?

• A. atmospheric ozone
• B. Short rotation
• C. long nights

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7. Why can we not live on Pluto?

1. Pluto does not orbit the sun since its not a
   planet now.
2. Pluto is covered in lakes
3. Pluto is too far from the sun

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8. Why do astronauts communicate with radios
outside the space station?

1. So they do not have to shout
2. Space helmets muffle sound
3. Sound cant travel in space

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9. Back on Earth, astronauts returning from the
ISS need help from the spacecraft. Why?

1. Space food does not give them enough energy
2. Spacesuits are too heavy to be worn in space
3. Living in zero gravity weakens muscles and bones

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10. What is the atmosphere?

1. Layers of air that surround a planet
2. Display of lights in the sky
3. Average mass of an atom

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11. Which of the following planets do not have
water?

• Saturn
• Mars
• Pluto

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12. Why must astronauts exercise when on the ISS?

1. To keep from being bored
2. NASA tells them to
3. Keep their heart and muscles in shape

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13. Graphs and charts are used to communicate
results after an experiment to

• Make the date easier to understand
• Make scientist repeat experiments
• c. Make scientist do more work

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14. The independent variable goes along which
axis?

1. y-axis
2. X-axis

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15. The name of the rover currently on Mars that
just discovered a dried up bed stream is

1. Challenger
2. Endeavor
3. Curiosity

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16. What reason may result in the different
temperatures on planets?

• a. The composition of the core is different
• b.The rates of rotation are different
• c. The composition of the atmospheres are
  different

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17. The dependent variable is on which axis?

1. y-axis
2. x-axis

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18. Sunblock would be a model for Earths ozone
because it

1. Blocks the moons rays
2. Blocks ultraviolet radiation from the sun
3. Blocks wrinkles on the skin

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19. How does the magnetic field of Earth protect
life?

1. By deflecting solar winds
2. By absorbing ultraviolet radiation
3. By attracting solar energy

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20. What is the purpose of the ISS?

1. To study alien life forms
2. To study the effects of rotating around Earth 16
   times in one day
3. To study the effects of being in a zero gravity
   environment long term