Harnessing Human Energy
Define energy
something that moves or changes
Define temperature
how hot or cold something is
Define population
all the different species in one area or region.
define weather
short term temperature in a region
Define potential energy
stored energy
Define thermal energy
how much kinetic energy the group of molecules have in a sample
How do we determine if a population is stable?
When the birth and death rates are the same.
define troposphere
the lowest layer in the atmosphere
Define kinetic energy
energy that is in motion (moving)
Which would have more thermal energy: a bathtub or a cup of coffee?
A bathtub because larger amounts of matter means larger amounts of thermal energy.
What demonstrates a decrease in population?
A higher death rate than birth rate causes a decrease in population.
what are clouds?
visible masses of water droplets or ice crystals suspended in the atmosphere/air parcels
T/F. Nothing creates energy. If something has energy, the energy must've been transferred from something else.
True.
Calculate the average temperature based on the thermal energy amount of each molecule:
4 4 4 4 2 2 5 5
4 + 4 + 4 + 4 + 2 + 2 + 4 + 4 = 28
28 divided by 8 = 3
Temperature is 3
What are energy storage molecules and how do organisms get them?
a molecule that organisms can use to release the energy needed to survive and reproduce
food
What are two causes for a region to experience more rain than normal?
1. new bodies of water
2. hotter temperature
Bouncing on a trampoline. Where are the points of potential energy?
1. brief landing on the trampoline
2. the highest moment in the air
How do air conditioners make our cities hotter?
The cold energy enters the building, cooling. The hot energy is removed from the building into the street. This makes the cities hotter.
Describe the Whale, crabs, phytoplankton population if the whales increase in population.
If whales increase in population, crabs will decrease due to competition, and therefore phytoplankton will increase because of the lack of crabs.
What is one phenomena of sudden weather pattern changes?
El Nino