L1: Atmosphere
Which of the following is a greenhouse gas? Choices: Oxygen, Nitrogen, Hydrogen, Carbon dioxide
Carbon dioxide
Which of these processes removes carbon dioxide from the atmosphere? Choices: Respiration, Decomposition, Photosynthesis, Fuel combustion
Photosynthesis
What method of heat loss used by the Earth is reduced by greenhouse gases? Choices: Radiation, Convection, Conduction, Combustion
Radiation
Which of these natural resources is a mineral? Choices: Oil, Wood, Water, Iron ore
Iron ore
What method is used to extract reactive metals from their naturally-occurring ores? Choices: Electrolysis, Combustion, Carbon displacement, Thermal decomposition
Electrolysis
How much carbon dioxide is in the Earth’s atmosphere?
4%
<1%
21%
78%
<1%
Which of these processes adds carbon dioxide to the atmosphere? Choices: Decomposition, Photosynthesis, Fuel combustion
Fuel combustion
Which of the following is a carbon sink? Choices: An ocean, A cattle farm, A landfill site, A coal-fired power station
An ocean
What is the key argument in favour of recycling metals?
A - It is safer than mining.
B - It is cheaper than extraction.
C - It preserves natural resources.
D - It is more energy efficient than mining.
C - It preserves natural resources.
What method is used to extract less reactive metals from their naturally-occurring ores? Choices: Electrolysis, Combustion, Carbon displacement, Thermal decomposition
Carbon displacement
Largest percentage of Earth's atmosphere is composed of this gas.
Nitrogen
Process at which fossil fuel is burned.
Combustion
Process of trapping heat in the atmosphere causing temperature to rise.
Greenhouse Effect
A resource that will never become depleted (will never run-out), such as wind and solar power.
Renewable Resources
Potassium or Gold: Which is more reactive?
Potassium
Process that reduced the amount of Carbon dioxide in the atmosphere.
Photosynthesis
Carbon sinks
Apart from Carbon dioxide, give another example of greenhouse gas.
Any of the following: Methane, Nitrogen oxide, Water vapour
Process of conversion of waste into reusable material
Recycling
Potassium or Gold: Which is HARDER to extract?
Potassium