Climate
Matter does not enter or leave
Closed systems
How much percent of n2 is in our atmosphere
78%
A force is?
A push or pull on a object
Stream flow is measured in?
Cubic feet per second
Would bank account be a positive feedback loop or negative
Negative
Matter can enter and can leave
Open systems
bacteria converts nitrogen to...
Ammonia
Spring Force is?
Compressed or stretched
Dissolve oxygen is measured in
Mg/l
Net work is ____ zero
Not
What sphere is the water sphere
Hydrosphere
Plants need nitrogen to?
Grow
Name all 6 forces
Friction force
Tension force
Air resistantance
Normal force
Applied force
Spring Force
Run off tells us?
How much stuff has run off into the river
All objects that have ______ have gravity
Mass
What sphere is the rock sphere
Geo sphere
The golf of Mexico is forming to much?
Nitrogen
Acceleration is?
A change in speed
Transparency tell us
How clear the water is
Newton’s second law is
Acceleration
Why are ice cores taken
Ro see how it was back then
What is the source that causes the biggest increase in temperature?
Greenhouse gas
Gravity is the
Nitrates tell us
If the water is safe
Mars average temperature is
-50 Celsius