Show:
The Water Cycle
Fresh Water
Salt Water (ocean)
Density
Three Stages of Water
100
What are the different kinds of precipitation?
Rain, snow, hail, and sleet.
100
Where is most of Earth's fresh water supply found?
Found in large sheets of ice such as icebergs and glaciers and in streams, rivers, and lakes.
100
Who are oceanographers?
People who specifically study oceans.
100
What is the formula for density?
density = mass/volume
100
What are the three stages of water?
Gas, solid, and liquid.
200
Who is a hydrologist?
A person who studies Earth's water systems and helps control water quality and quantity.
200
Where is the water with the least salinity?
Near edges of continents because fresh water from rivers and streams flow into the ocean, dilluting the water a bit.
200
What percentage of Earth's water supply is salt water/found in oceans?
97%
200
What is density measured in?
Kilograms per cubic meter (kg/m³).
200
What is sublimation?
The state of solid to gas, totally skipping the liquid state.
300
What causes oceans to evaporate slightly?
Sun heats up the water, causing the surface water molecules to evaporate and eventually become clouds.
300
What percentage of the water on Earth is fresh?
3%
300
The amount of salt dissolved in water
Salinity
300
What is density?
A measure of mass of an object of a given volume.
300
How does condensation occur and from what state to what state?
Heat is taken away from water, hence it goes from gas to liquid.
400
What happens to precipitation after they've reached land?
They eventually get into streams or rivers which would lead them back to the ocean.
400
What is the biggest problem that society is facing?
Fresh water is being used up too fast that nature can recycle it for use.
400
What percentage in salt water is other substances?
0.7%
400
What is the density of ocean water?
1027 kg/m³
400
What is the freezing point for salt water?
-1.9ºC
500
What are clouds?
Evaporated water possibly from oceans that has cooled and come together, which creates clouds.
500
Where are the largest sheets of ice found?
Greenland, close to the North Pole, Antarctica, and the South Pole.
500
What percentage in salt water potassium?
1.1%
500
Why will a volleybal sit on top of the snow?
Because the volleyball's density is less than the snow's.
500
What is the driving force behind the water cycle?
The heat from the Sun.