Water Cycle, Oceans, and the Atmosphere- April 28, 2026 (UNFINISHED)

where is most of Earth’s water located?

ocean

where is most of Earth’s freshwater located?

glaciers

Aquifers

Groundwater

Impervious surfaces (& how they impact bodies of water and ground water)

Transpiration

Infiltration

Accumilation

Stages of the water cycle

How does the water temperature affect density?

The higher the temperature, the lower the density. This is because the molecules move faster and more spread apart than cold water.

How does the salinity of the water affect density?

The higher the salinity, the denser the water. This is because the salt adds mass to the water, making it denser than fresh or drinking water.

Why is the dead sea so easy to float on?

There is so much salt in it that it is a supersaturated solution and the density is significantly higher than that of the human body.

How do gases behave at different temperatures

how does temperature affect air density

As temperature increases, the density decreases

How does altitude affect air pressure and density

The air pressure and air density both decrease

How does a hot air balloon work?

The fire warms the air inside the balloon, making it less dense than the surrounding air so it floats upward.

what is wind? What direction does air move?

Why is the atmosphere important?

provides breathable oxygen, protects against harmful solar radiation, warms the planet through the greenhouse effect, and is responsible for the water cycle

Composition of the atmosphere- what gases make up the atmosphere?

78% nitrogen, 21% oxygen, 1% argon, carbon dioxide, neon, helium, methane, krypton, hydrogen, nitrous oxide, xenon, ozone, and water vapor

Layers of atmosphere

Trophosphere, stratosphere, mesosphere, thermosphere, exosphere

Trophosphere

Weather, greenhouse effect, hot air balloon, humans

stratosphere

ozone layer, airplanes

mesosphere

coldest, meteors burning

thermosphere

high heat, auroras

exosphere

extremely hot, fades into outer space, Would feel freezing cold because there aren’t enough molecules to transfer heat to you

Greenhouse effect

what are examples of greenhouse gases

where do greenhouse gases come from

is the greenhouse effect good or bad

the greenhouse effect acts as a ‘blanket” for the earth; without it, Earth would be a cold and inhabitable planet.

what layer of the atmosphere does GHE occur in

trophosphere

ozone layer

what layer of the atmosphere is ozone layer in

stratosphere

How can the ozone layer be depleted

what type of UV radiation is filtered by the ozone layer

UVC radiation