Science

CO2 also plays a very important role in global-temperature regulation. Which of the following statements is true regarding the role that CO2 plays in this type of regulation? A) CO2 contains carbon and oxygen. B) CO2 absorbs the infrared wavelengths of energy emitted from Earth. C) CO2 is the only greenhouse gas that affects global temperature. D) CO2 allows the high-energy wavelengths from the Sun to reach the surface of Earth.

A

There are many fluctuations that may occur in the carbon cycle. Which of the following is NOT a natural cause of the fluctuations of the carbon cycle? A) Industrial activities B) Seasonal variations C) Changes in ocean currents D) The exchange that occurs between carbon sinks

A

What is the main cause of global changes in climate over long periods of time? A) Variations in the flow of energy in Earth's system B) Fluctuations in the sizes and positions of continents C) Changes in the variety and complexity of plants and animals D) Interactions between Earth and the most massive planets

A

What feature of Earth helps to stabilize our temperatures by keeping a balance of the right amount of the Sun's light energy reaching us? A) A cloud layer B) The atmosphere C) Gravity D) Water

B

Which of the following would most likely lead to a cooler global climate? A) A slower rotation of Earth, leading to a permanent lengthening of periods of both daylight exposure and darkness on Earth B) Volcanic activity sufficient to produce ash clouds that cover a significant portion of Earth's atmosphere for an extended period of time C) Melting of polar ice caps that leads to a rise in sea level over the entire planet and less available habitat for land-dwelling plants and animals D) Human activity, including the burning of fossil fuels that increases the amount of carbon dioxide and other gases that trap thermal energy in the atmosphere

B

Which of the following is not an effect of climate change? A) Rising sea levels B) Coastal flooding C) Increased glacial ice D) Extreme weather

C

Which of the following statements is NOT true of CO2 and its role in our atmosphere? A) CO2 is considered a greenhouse gas. B) CO2 plays a very important role in the carbon cycle. C) CO2 is the only cause of global-temperature increases. D) CO2 absorbs infrared electromagnetic waves.

C

climate

is a result of average atmospheric conditions in a certain region over a long period of time.

Climate

is the weather conditions that happen over the course of years, decades, or centuries and can generally be discussed on a regional or global level.