Science revision

............. is a mixture of gases that

surrounds the planet.

• Atmosphere

• Greenhouse

• weather

• climate

...................involves the continuous circulation of water in the Earth-Atmosphere system.

• Atmosphere

• Greenhouse

• Hydrolic cycle

• Nitrogen cycle

........... is the repeating process of water entering and moving through the atmosphere before returning to Earth's surface '

• Atmosphere

• Greenhouse

• Hydrolic cycle

• Nitrogen cycle

When we discuss greenhouse gases what is the main one we discuss?

• Methane (CH₄)

• Carbon Dioxide (CO₂)

• Nitrous oxide (N₂O)

• Flourinated gases

The main human activity that releases greenhouse gases is...

• using bottled water

• burning fossil fuels

• texting on cellphones

• eating meat

 T/F: Water vapor is a greenhouse gas

• False

• True

T/F: Some greenhouse gases are naturally present in the Earth's atmosphere

• False

• True

Q. The warming of the atmosphere by the trapping of heat being radiated to space is called

• evaporation

• condensation

• the greenhouse effect

• radiation

Q. What are the two most common greenhouse gases?

• Water Vapor (H₂O) and Methane (CH₄)

• Carbon Dioxide CO₂ and Methane (CH₄)

• Water Vapor (H₂O) and Carbon Dioxide CO₂

• Water Vapor (H₂O) and Nitrous oxide (N₂O)

Q. Over the past 200 years, the level of carbon dioxide in the atmosphere has

• decreased slightly.   

• increased until recently, and then decreased.

• increased steadily.   

• stayed about the same.