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Understanding Atmospheric Layers and Ocean Breezes: Key Concepts in Earth Science

Explore the fascinating phenomena of ocean winds and atmospheric layers through engaging scientific starters. Discover why ocean breezes blow toward shore during the day, learn about temperature variations in the mesosphere and troposphere, and understand the principles of conduction. Delve into the composition of Earth's atmosphere, including the percentage of oxygen it contains. Each section offers multiple-choice questions to enhance comprehension and verify understanding of essential Earth science concepts.

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Understanding Atmospheric Layers and Ocean Breezes: Key Concepts in Earth Science

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  1. Science Starter 91 2-1-2010 Sammy feels an ocean breeze as he plays volleyball at the beach. Why do ocean winds blow toward shore during the day? A. Earth’s rotation causes air to blow toward land. B. The energy of ocean storms pushes air toward shore. C. Air over the beach heats up, rises, and is replaced by ocean air. D. Ocean air is less dense, so it moves in to replace air over the land.

  2. Science Starter 92 2-2-2010 • Why is the top of the mesosphere colder than the top of the troposphere? • A. There are fewer gases that absorb solar energy in the mesosphere. • B. The troposphere is closer to the sun than the mesosphere is. • C. Particles are far apart in the mesosphere, so they do not transfer energy. • D. The mesosphere contains less ozone than the troposphere does.

  3. Science Starter 93 2-3-2010 Why does the temperature of different layers of the atmosphere vary? a. because air temperature increases as altitude increases b. because the amount of energy radiated from the sun varies c. because of interference by humans d. because of the composition of gases in each layer

  4. Science Starter 94 2-4-2010 • Which of the following is the best example of conduction? • a. a light bulb warming a lampshade • b. an egg cooking in a frying pan • c. water boiling in a pot • d. gases circulating in the atmosphere

  5. Science Starter 95 2-5-2010 • How much of Earth’s Atmosphere is Oxygen? • A. 20% • B. 78% • C. 35% • D. 50%

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