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Solar Cycle – Astronomy Test

The key terms of Astronomy Test include, Carbon Cycle, Water Cycle, Moon, Solar, Oxygen.


During which phase of the moon do we see the entire lighted side of the moon?

  • waning gibbous
  • new moon
  • full moon – correct
  • first quarter

Which term tells us that we are seeing more and more of the lighted portion of the moon?

  • full
  • new
  • waxing – correct
  • waning

How long does it take the moon to rotate on its axis?

  • about 25.3 days
  • about 27.3 days – correct
  • about 30 days
  • about 2 months

When dead animals break down, which of the following is released into the atmosphere?

  • oxygen
  • carbon dioxide – correct
  • calcium
  • greenhouse gases

The carbon cycle is closely linked to which of the following processes?

  • photosynthesis – correct
  • precipitation
  • condensation
  • evaporation

Which of the following elements accounts for 78 percent of Earth’s atmosphere?

  • nitrogen – correct
  • hydrogen
  • water
  • oxygen

The processes of evaporation, condensation, and transpiration operate in which of the following?

  • water cycle – correct
  • nitrogen cycle
  • oxygen cycle
  • hydrogen cycle

Which layer of the sun is only seen during a total solar eclipse?

  • convective zone
  • core
  • corona – correct
  • photosphere

Which layer of the sun is the hottest?

  • core – correct
  • chromosphere
  • photosphere
  • corona

Why do the planets in our solar system stay in their positions?

  • They travel that the same distance from each other.
  • The sun’s radiation keeps them there.
  • Friction with the atmosphere keeps them from escaping.
  • The sun’s gravity keeps them in place. – correct

Which of the following is a legume?

  • clover – correct
  • wheat
  • corn
  • oats

 What form does nitrogen take in the atmosphere?

  • N – no response givenN
  • NO3–
  • N2 – correct
  • NH4+

Where are the nodules of a legume found?

  • in the stem
  • in the leaves
  • in the flowers
  • in the roots – correct

Which of the following solar phenomena is thought to cause short term climate changes?

  • solar winds
  • prominences
  • solar flares
  • sunspots – correct

Magnetic storms are the result of which of the following?

  • 10- to 11-year cycling of sunspots
  • a solar prominence
  • constant solar wind
  • an increased number of solar wind particles – correct

Why are sunspots dark?

  • They are areas of solid material on the sun.
  • They are warmer than the surrounding gases.
  • They are cooler than the surrounding gases. – correct
  • They are old spots on the sun.

The carbon cycle, closely related to the cycling of oxygen throughout the environment, is tied to which of the following processes?

  • condensation
  • photosynthesis – correct
  • residence
  • the rock cycle

Which of the following is a way that carbon enters the atmosphere?

  • photosynthesis
  • burial of biomass
  • volcanic activity – correct
  • deposition of sediment

Where is the largest reservoir of carbon?

  • soil
  • living things
  • ocean – correct
  • air

During which phase of the moon do we see the entire lighted side of the moon?

  • waning gibbous
  • new moon
  • full moon – correct
  • first quarter

Which term tells us that we are seeing more and more of the lighted portion of the moon?

  • full
  • new
  • waxing – correct
  • waning

How long does it take the moon to rotate on its axis?

  • about 25.3 days
  • about 27.3 days – correct
  • about 30 days
  • about 2 months

When dead animals break down, which of the following is released into the atmosphere?

  • oxygen
  • carbon dioxide – correct
  • calcium
  • greenhouse gases

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