Lesson Worksheet: The Earth and the Atmosphere Science

In this worksheet, we will practice describing the composition of the Earth's atmosphere, and the structure of our planet.


During a volcanic eruption, molten rock can escape and travel slowly across the surface of Earth until it eventually cools down and solidifies. What is the name of this molten rock?

  • AMagma
  • BAsh
  • CLava
  • DEmbers
  • EPyroclastic flow


When the outermost layer of the mantle cools and solidifies, it is known as the crust. The crust is comprised of the continents and holds all of the world’s water. What is all of the water found on, under, and above the surface of a planet known as?

  • AStratosphere
  • BTroposphere
  • CLithosphere
  • DHemisphere
  • EHydrosphere


In what layer of the atmosphere would you expect to find the ozone layer?

  • AMesosphere
  • BExosphere
  • CTroposphere
  • DThermosphere
  • EStratosphere


What is the chemical formula for ozone?

  • AO3
  • BO2
  • CO4
  • DO
  • EOO2


Which of the gases found in our atmosphere has been steadily increasing over the last 100 years and may be causing the average temperature of Earth to increase?

  • AOxygen
  • BNitrogen
  • CCarbon dioxide
  • DHelium
  • EMethane


What is the gradual increase in Earth’s temperature due to the increase in certain gases in our atmosphere known as?

  • AOzone depletion
  • BSolar radiation
  • CThe greenhouse effect
  • DGlobal warming
  • EPhotochemical smog


Complete the following: The ozone layer is incredibly important to life on Earth as it protects Earth’s surface from receiving large quantities of .

  • Asolar flares
  • Bcosmic rays
  • Czodiacal light
  • Dgeomagnetic storms
  • EUV radiation


Which of the following gases is not found in significant quantities in Earth’s atmosphere?

  • AAmmonia
  • BOxygen
  • CArgon
  • DCarbon dioxide
  • ENitrogen


Which of the following chemical equations correctly shows the splitting of an oxygen molecule by UV radiation in the ozone layer?

  • AO+OO23
  • BOO+O+O3
  • CO+OO2
  • DOO+O32
  • EOO+O2


What is the name given to the rise and fall of molten rocks in the mantle that causes Earth’s crust to change very slowly through the movement of the tectonic plates?

  • AMagma movements
  • BVolcanic eruptions
  • CEarthquakes
  • DLava fields
  • EConvection currents

This lesson includes 5 additional questions and 2 additional question variations for subscribers.

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