Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

The Greenhouse Effect is caused primarily by:

  1. water vapor

  2. carbon dioxide

  3. ozone-destroying aerosol sprays

  4. energy caused due to radiation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water vapor is actually the most abundant greenhouse gas in Earth's atmosphere and is responsible for the majority of the natural greenhouse effect. However, in the context of human-caused climate change, carbon dioxide is the primary driver because it accumulates and remains in the atmosphere for centuries, whereas water vapor cycles through precipitation relatively quickly. This question appears to test knowledge of the natural greenhouse effect.

Multiple choice general knowledge science & technology

Which most accurately describes the effects of Global Warming in the United States over the last 100 years?

  1. temperatures have risen > 5° C

  2. temperatures have risen > 10° C

  3. temperatures have risen > 2° C

  4. temperatures have risen < 1&#176; C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Over the last 100 years (approximately 1920-2020), temperatures in the United States have risen by less than 1°C on average. NASA and NOAA data indicate warming of approximately 1.0-1.2°C globally since pre-industrial times, with regional variations. The US has experienced warming consistent with but somewhat less than the global average.

Multiple choice general knowledge science & technology

How much Carbon dioxide (CO2) is in Earth's atmosphere today?

  1. 10% or greater

  2. 2% to 10%

  3. less than 1/10th of 1%

  4. more than 25%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon dioxide currently makes up approximately 0.04% (420 ppm as of 2022) of Earth's atmosphere, which is less than 1/10th of 1%. This small percentage has a disproportionate effect on climate because CO2 is a potent greenhouse gas that has increased significantly from pre-industrial levels of about 280 ppm.

Multiple choice general knowledge science & technology

Carbon dioxide from coal-fired power plants damages forests.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The statement is False. While coal-fired power plants do emit CO2 that contributes to climate change (which can stress forests through drought, pests, and disease), CO2 itself does not directly damage forests in the way that pollutants like sulfur dioxide (which causes acid rain) or ozone do. In fact, higher CO2 levels can stimulate plant growth in controlled conditions, though this benefit is outweighed by climate change impacts.

Multiple choice general knowledge science & technology

When was apple computers found?

  1. 1 April 1974

  2. 17 April 1974

  3. 1 April 1976

  4. 17 April 1976
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Apple Computer was founded on April 1, 1976 by Steve Jobs, Steve Wozniak, and Ronald Wayne. The April 1st date is famous as both the founding day and an April Fool's joke that turned into history. Option C correctly states 1 April 1976.