PRETEST 1

1. 1. What is the general trend observed in the graph regarding global temperature anomalies from 1980 to 2020?

• • A. The anomalies fluctuate without a clear trend.

• • B. The anomalies have generally decreased over time.

• C. The anomalies have remained constant over the years.

• D. The anomalies have generally increased over time.

2. 2. What was the approximate temperature anomaly in the year 2000?

• A. -0.12°C

• B. 0.02°C

• C. 0.24°C

• D. 0.56°C

3. 5. If the trend continues, what would you expect the temperature anomaly to be in 2030?

• • A. Around 0.5°C

• • B. Around 0.7°C

• • C. Around 0.9°C

• D. Around 1.2°C

3. 6. Why might scientists use temperature anomalies instead of absolute temperature values to measure climate change?

• • A. Anomalies show changes relative to a baseline, making trends clearer.

• B. Anomalies are easier to measure than absolute temperatures.

• • C. Absolute temperatures are not accurate.

• • D. Anomalies are only used for short-term studies.

3. 3. What are some possible reasons for the increase in global temperature anomalies over the years?

• A. Increased levels of greenhouse gases like CO₂.

• B. Reduced volcanic activity worldwide.

• C. A natural cooling cycle of the Earth.

• D. Less solar radiation reaching Earth.

3. 4. Compare the temperature anomaly in 1980 and 2020. How much has it increased?

• • A. About 0.3°C

• • B. About 0.6°C

• C. About 1.0°C

• D. About 1.5°C

3. 7. How can policymakers use data like this to make decisions about environmental policies?

• • A. By implementing laws to reduce carbon emissions.

• • B. By encouraging increased industrial activity.

• • C. By ignoring climate trends since they are natural.

• D. By stopping the use of all energy sources.