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10 questions
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  • Q1

    How would Earth be different without greenhouse gases in its atmosphere?

    More solar radiation would be reflected back into space.

    More heat from solar radiation would be stored in Earth’s core.

    More heat from solar radiation would escape into space. 

    More solar radiation would penetrate Earth’s crust and mantle. 

    30s
  • Q2

    What is a major source of air pollution?

    planting more trees in forest areas 

    building dams for hydroelectric plants

    small farms raising large numbers of animals such as cows and pigs

    the production of energy using solar and nuclear power

    30s
  • Q3

    Which is a possible consequence of global warming?

    a decrease in temperature, causing shorter growing seasons

    a decrease in temperature, causing earlier frosts

    an increase in the amount of coral reefs 

    an increase in the number of heat waves, causing droughts

    30s
  • Q4

    An iceberg breaks off of a glacier and floats into the ocean. In the ocean, the iceberg begins to melt. Which temporary effect does this melting have on ocean water in the immediate area of the iceberg?

    The melting ice increases the acidity of the ocean water.

    The melting ice lowers the freezing point of the ocean water.

    The melting ice releases the carbon dioxide stored in ocean water.

    The melting ice reduces the salinity of the ocean water.

    30s
  • Q5

    Which of these events is an example of a change in climate? 

    The average amount of annual precipitation decreases.

    Afternoon clouds form and block the sunlight. 

    An overnight temperature drop causes frost to form.

    A series of tornadoes occurs over a one-week period.

    30s
  • Q6

    Which is least likely to cause changes in global climate?

    radiation from solar flares

    an El Niño event

    tsunami 

    a volcanic eruption 

    30s
  • Q7

    Which of these human activities has caused the greatest increase in concentrations of atmospheric CO2?

    recycling 

    using nuclear power

    burning fossil fuels 

    planting trees

    30s
  • Q8

    Which could increase the amount of greenhouse gases in the atmosphere?

     planting trees in areas that have been deforested

    burning coal to produce electricity

    reducing the use of gasoline-powered vehicles

    30s
  • Q9

    Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen?

    troposphere

    ozone hole

    greenhouse effect

    30s
  • Q10

    What can happen if the Earth continues to warm?

    decrease in heat strokes

    decrease in severe weather

    ice caps melt

    30s

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