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ESPS

QuestionAnswer
Main source of external energy for the earth? Solar Energy
Why is earth a closed system? We have limited resources
What kind of energy does the earth need to move? Thermal energy
1st law of thermodynamics? Energy cannot be created or destroyed
2nd law of thermodynamics? When energy is transferred some of it is lost
What percent of the atmosphere is nitrogen? 78%
What element makes up the largest percent of the atmosphere? Nitrogen
What percent of the atmosphere is oxygen? 21%
How much of the earth is covered in salt water? 97%
How much of the earth is covered in freshwater 3%
What sphere do the humans have the least impact on? Geosphere
Water cycle When water circulates through the earth
Carbon cylce When carbon circulates through the earth
How does photosynthesis relate to the carbon cycle? Provides the food that will be used to create energy for the Plant
How does cellular respiration relate to the carbon cycle? By breaking down food molecules
What sphere is carbonate found in? Atmosphere
What sphere does phosphorus not cycle through? Geosphere
What is the usable form of nitrogen? Nitrates
Nitrogen Fixation The process of changing free nitrogen gas into a usable form
Dentrification conversion of nitrates into nitrogen gas
3 ways nitrogen is fixed Bacteria, Humans, Lighting
What causes the thermal convection that drives plate motions? Thermal energy
What phase of water is the most dense Liquid
What phase of water is the least dense Solid
What are polar molecules? Having a positive and negative charge at each end
What is energy The ability to do work
What is matter Anything that takes up space
What is an open system When both matter and energy can be exchanged
What is a closed system When neither matter nor energy can be exchanged.
Created by: karimebastida19
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