Reading Comprehension — Set 1
Questions 1–10 of 120
According to the passage, what is the primary cause of global warming mentioned?
Correct Answer: B. Greenhouse gases from human activities
The passage explicitly states that greenhouse gases emitted from human activities are the primary cause of global warming. These gases trap heat in the atmosphere, leading to increased temperatures worldwide.
What percentage of scientists agree on climate change according to the passage?
Correct Answer: C. 97%
The passage mentions that 97% of climate scientists agree that climate change is real and caused primarily by human activities. This overwhelming consensus represents the scientific community's position.
Which of the following is NOT mentioned as an effect of climate change in the passage?
Correct Answer: D. Decreased atmospheric oxygen
The passage discusses rising sea levels, extreme weather events, and biodiversity loss as effects of climate change. However, decreased atmospheric oxygen is not mentioned as a direct effect in the passage.
What time period does the passage use to illustrate the temperature increase?
Correct Answer: C. Last 150 years
The passage references temperature data from the last 150 years to demonstrate the dramatic increase in global temperatures. This timeframe aligns with industrialization and increased fossil fuel consumption.
According to the passage, what is one major source of greenhouse gas emissions?
Correct Answer: B. Industrial and transportation sectors
The passage identifies the industrial and transportation sectors as major sources of greenhouse gas emissions. These sectors rely heavily on fossil fuel combustion, which releases significant amounts of CO2 and other gases.
What is the first stage of the water cycle as described in the passage?
Correct Answer: B. Evaporation
The passage begins by explaining evaporation, where water from oceans, lakes, and rivers is heated by the sun and turns into water vapor. This is identified as the initial stage of the water cycle.
How much of Earth's water is stored in the oceans according to the passage?
Correct Answer: D. 97%
The passage states that approximately 97% of Earth's total water is stored in the oceans. This makes oceans the primary source of water for the continuous water cycle.
In the water cycle, what process occurs when water vapor rises and cools?
Correct Answer: C. Condensation
The passage explains that condensation occurs when water vapor rises into the atmosphere and encounters cooler temperatures, forming clouds. This process is essential for cloud formation in the water cycle.
What does the passage identify as the role of plants in the water cycle?
Correct Answer: B. They release water vapor through transpiration
The passage mentions that plants contribute to the water cycle through transpiration, releasing water vapor into the atmosphere. This is particularly important in vegetated regions and tropical areas.
According to the passage, where does most freshwater on Earth originate?
Correct Answer: C. Precipitation from clouds
The passage indicates that precipitation is the primary source of freshwater on Earth. When water vapor condenses and falls as rain or snow, it replenishes freshwater supplies in lakes, rivers, and groundwater.