Cycles
Define photosynthesis
When plants absorb sunlight and co2 from the atmosphere to make sugars
Define and give an example of the hydrosphere
All water on the earth in all phases
Snow
Negatives of LOW transparency
Cloudy water, high temps and sediment clogs fishes gills
Define a force
A push or a pull on an object
Define inertia
An object at rest will stay at rest unless an object makes it move
how has the amount of co2 in the atmosphere changed over time?
Increasing co2 in the atmosphere
define and give an example of a negative feedback loop
Balanced relationship
Mario Cart video game
define and give the units for stream flow
The volume of water that passes during a certain amount of time
ft^3/sec
What is an unbalanced net force and give examples
Forces applied in different size and direction
pulling a light wagon
What are the F, A and M units?
F = M x A ; Newton (N)
A = F/M ; m/sec^2
M = F/A ; kg
In which sphere is the most nitrogen found?
Atmosphere
Define and give an example of a closed system
Matter cannot enter or leave and some energy can enter or leave
Earth
Negatives of LOW dissolved oxygen
Fish and plants cannot breath (Dead Zone)
Define gravity
An attractive force between 2 objects
Give an example of an action reaction force
A hammer hits a nail and the nail hits the hammer
Define evaporation
Water turns to vapor and is transferred to the atmosphere
Define and give an example of atmosphere
A blanket of gas surrounding earth that extends to the edge of space
Air (Oxygen)
Define and give the units for dissolved oxygen
Amount of oxygen gas in the water
mg/L
Define acceleration and give examples of when an object would accelerate
Any change in speed or direction
Driving through a town
Define Newton's 3rd Law
For every action there is an equal and opposite reaction
How do humans contribute to the excess nitrogen in the water cycle?
Runoff brings fertilizer from farms and gardens into the water
Define and give an example of a positive feedback loop
Something happens causing it to happen again becoming greater each time
Snow ball rolling down a hill
Define and give the units for transparency
The clarity of the water
cm
What are 2 factors that impact gravitational force and tell why
Mass; More mass=More gravity
Distance; More distance=Less gravity
State the relationship between mass and acceleration
When mass increases acceleration decreases