Twitter - Quiz Tutors
Facebook - Quiz Tutors

Water Cycle – Astronomy Exam

The key terms of Astronomy Exam include, Carbon, Water Cycle, Nitrogen, Carbon Dioxide, Atmosphere, Decomposers.



Which star is closest to earth?

  • Polaris
  • the sun – correct
  • the Milky Way
  • Sirius

What is the innermost layer of the sun’s atmosphere called?

  • troposphere
  • photosphere – correct
  • chromosphere
  • corona

Using special equipment, which layer of the sun’s atmosphere is visible during a total solar eclipse?

  • photosphere
  • solar flares
  • chromosphere
  • corona – correct

Climate change on earth is thought to be affected by which of the following solar phenomena?

  • solar prominences
  • solar eclipses
  • solar flares
  • sunspots – correct

The burning of fossil fuels releases which of the following gases into the atmosphere?

  • nitrate
  • nitrogen
  • carbon dioxide – correct
  • oxygen

What role do decomposers play in the cycling of material in a biogeochemical cycle?

  • Decomposers make chemicals from the nonliving environment into organic compounds.
  • Decomposers use nonliving processes such as rain and fire to make inorganic chemicals.
  • Decomposers incorporate some organic compounds into their bodies and release some back to the environment as waste.
  • Decomposers break down organisms to supply the soil, water, and air with inorganic chemicals. – correct

During which of the following steps of the water cycle is water changed from a vapor state to a liquid state?

  • transpiration
  • condensation – correct
  • evaporation
  • precipitation

What impact can deforestation have on the water cycle?

  • Photosynthesis increases, thereby increasing the amount of carbon dioxide in the air.
  • Transpiration declines. – correct
  • Carbon dioxide is released into the air as trees are burned.
  • The amount of nitrogen-fixing bacteria increases.

Carbon dioxide enters the atmosphere through each of the following processes except one which one?

  • volcanic eruptions
  • photosynthesis – correct
  • burning fossil fuels
  • respiration

The use of fossil fuels is a concern because it can lead to which of the following?

  • increased runoff
  • eutrophication
  • polluted waters
  • global warming – correct

A farmer has concerns about the nitrogen levels in her soils.

What can she do to ensure that the nitrogen bacteria are replenished in the soil?

  • Plant more plants to increase transpiration.
  • Clear cut the area surrounding the field.
  • Plant a crop of legumes, such as clover or alfalfa. – correct
  • Plant a crop of mushrooms to speed up decomposition.

Where is the largest reservoir of carbon on earth located?

  • in the atmosphere
  • in freshwater
  • on land
  • in the oceans – correct

Marine organisms have carbon in their bodies in which of the following forms?

  • pure carbon
  • carbon dioxide
  • calcium carbonate – correct
  • bicarbonate

Carbon in the bodies of marine organisms is often found in which of the following forms?

  • chemical sedimentary rock – correct
  • clastic sedimentary rock
  • layered sedimentary rock
  • igneous rock

Which of the following is the source of energy for the water cycle?

  • gravity
  • volcanic eruptions
  • winds
  • the sun – correct

Which of the following statements about the water cycle is true?

  • Organisms in the biosphere do not influence the water cycle.
  • The water cycle only continues during daylight hours.
  • Precipitation that falls to the ground ends up only as groundwater.
  • Plants play a vital role in the water cycle. – correct

Why is nitrogen fixation such an important step in the nitrogen cycle?

  • Decomposers need to use cap n cap h sub 4 plus.
  • Bacteria convert the fixed nitrogen back into N2.
  • Soil nitrogen is different.
  • Plants can’t use nitrogen in the form of cap n sub 2. – correct

How does deforestation affect the water cycle?

  • It reduces the amount of carbon dioxide in the atmosphere.
  • It leads to an increase in eutrophication.
  • It increases the amount of transpiration.
  • It can alter precipitation patterns. – correct

The carbon cycle works in conjunction with which of the following?

  • all biogeochemical cycles
  • nitrogen cycle
  • cycling of oxygen – correct
  • water cycle

Energy from the sun comes from fusion.

What happens during that reaction?

  • Helium turns into hydrogen.
  • Hydrogen turns into helium. – correct
  • Oxygen turns into carbon dioxide.
  • Carbon dioxide turns into oxygen.

Which star is closest to earth?

  • Polaris
  • the sun – correct
  • the Milky Way
  • Sirius

What is the innermost layer of the sun’s atmosphere called?

  • troposphere
  • photosphere – correct
  • chromosphere
  • corona

Using special equipment, which layer of the sun’s atmosphere is visible during a total solar eclipse?

  • photosphere
  • solar flares
  • chromosphere
  • corona – correct

Climate change on earth is thought to be affected by which of the following solar phenomena?

  • solar prominences
  • solar eclipses
  • solar flares
  • sunspots – correct

Homepage