Unit 1 Earth systems Review-Reteach-Reinforce Activity

Earth is divided into five different spheres. Which statement is true about the interaction between two of these spheres?

• Weather is an interaction between the hydrosphere and the geosphere.

• A plant receiving water from precipitation is an interaction between the biosphere and the hydrosphere.

• An ice cap providing shelter for an arctic animal is an interaction between the biosphere and the hydrosphere.

• The formation of the Grand Canyon is an example of an interaction between the geosphere and the atmosphere.

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Which of these is NOT a function of Earth’s atmosphere?

• insulating the planet to keep it warm

• protecting Earth from harmful radiation

• allowing water to evaporate into space

• storing oxygen for living things to breathe

The Sun heats the atmosphere of Earth unevenly. Which of the following statements is the most likely result of this uneven heating?

• Convection in the atmosphere causes a change in air density, resulting in winds.

• Conduction through the atmosphere causes evaporation to occur over oceans, resulting in rain.

• Radiation from the Sun reflects through the atmosphere back into space resulting in cooler evenings.

• Radiation from the Sun causes atmospheric moisture to collect over mountain ranges resulting in snowfall.

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If a large volcano that is on an island erupts, it will impact the local ecosystem. Which of the following is NOT a way the volcano will affect the local ecosystem?

• Lava will run down from the volcano, burning down all the trees

  around the volcano.

• The lava from the volcano will heat up the air in the local area and

  kill all life in the area.

• When the volcano erupts, it will throw dust into the air affecting

  plants across the island.

• The lava will run into the ocean around the island, killing coral reef

  animals.

Your body temperature rises as you walk around outside in Bangladesh on a hot afternoon. The sensors in your skin detect the rise in your surface temperature so you start to sweat.

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A thermostat in a central heating system can determine the temperature of your living room. It switches the air conditioner on when the temperature increases to a predetermined level and shuts it off when it cools to another level. The room temperature remains within a comfortable level regardless of the temperature outside

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You are lost on a snowy mountain. When your body senses that it is cooling below 37°C, various mechanisms such as shivering help to raise your body core temperature again. However if these are insufficient to restore normal body temperature, our metabolic processes start to slow down, because the enzymes that control them do not work so well at lower temperatures. As a result, you become lethargic and sleepy and move around less and less, allowing your body to cool even further. Unless you are rescued at this point, your body will reach a new equilibrium; you will die of hypothermia.

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Higher temperatures cause more evaporation which leads to more water vapor in the atmosphere. Water vapor is a greenhouse gas so will trap more heat so the atmosphere will warm more.

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As carbon dioxide levels in the atmosphere rise, the temperature of the Earth rises. As the Earth warms the rate of photosynthesis in plants increases, more carbon dioxide is therefore removed from the atmosphere by plants, reducing the greenhouse effect and reducing global temperatures.

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As the Earth warms, ice cover melts, exposing soil or water. Albedo decreases (albedo is the fraction of light that is reflected by a body or surface). More energy is absorbed by the Earth’s surface. Global temperature rises. More ice melts.

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