Practise MYP Chemistry questions on 7.1 Atmospheric Composition and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
True or False: Intense volcanic activity on early Earth, approximately 4.6 billion years ago, released large amounts of oxygen into the atmosphere.
In the mechanism of the greenhouse effect, greenhouse gases absorb infrared radiation that has been emitted from which specific source?
In the context of the carbon cycle, why is the combustion of fossil fuels considered a disruption of the natural 'dynamic balance'?
Which method is used by climate scientists to directly sample the atmosphere from hundreds of thousands of years ago?
According to geological and biological evidence, for approximately how long have photosynthesis and respiration maintained a dynamic balance of gases in Earth's atmosphere?
True
False
The Earth's surface
Volcanic eruptions
The upper stratosphere
The Sun's core
It prevents plants from performing photosynthesis
It removes nitrogen from the atmosphere
It releases carbon that was 'locked away' in geological storage for millions of years
It causes the oceans to release more oxygen
Calculating the rate of current volcanic outgassing
Observing the rings of fossilized trees in tropical forests
Analyzing gas bubbles trapped within ancient ice cores
Measuring the salt concentration in deep-sea trenches
800,000 years
2.7 billion years
3.5 billion years
4.6 billion years
