Climate Change — Unit test Answers

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Which is one source that scientists use to reconstruct past climate conditions?

fossils frozen in glaciers

daily temperatures

the tilt of Earth’s axis

running water

Which describes an effect that ocean currents have on short-term climate change?

Ocean currents increase the strength of prevailing winds, which can cool the air and land.

Ocean currents can carry cold water, which can cool the air and land.

Ocean currents increase hurricane activity, which can raise the temperature of the air and land.

Ocean currents carry cold water, which may not affect hurricane activity and lower the temperature of the air and land.

Which is one way that analyzing ice benefits scientists who study ancient climates?

Scientists can analyze frozen volcanic dust to help predict eruptions.

Scientists can study the layers of ice cores to gather information about past atmospheric composition.

Scientists can use sand grains in ice to make inferences about the climate area.

Scientists can study tree rings in ice to learn more about past climates.

Which is a negative effect of rising ocean temperatures?

the drying out of fertile land and the formation of dust bowls

the flooding of low-lying coastal areas

the faster evaporation of water in the soil

the decreased frequency of major storms

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