Science - Unit 4 - Water Systems on Earth

When testing water, what do we use a Secchi disk for?

Saskatchewan's landscape has been shaped primarily by ____________ periods in Earth's history.

What percentage of Earth's surface is covered in water?

The water in rivers, streams, lakes and ponds is called:

An area of land where precipitation collects and drains into a common body of water is a:

When clouds form, water changes from a gas to a liquid. This is called:

What did Justin Trudeau promise during the 2015 election campaign?

When there is rapid growth of algae/plants near the surface, what happens?

Which has a greater buoyant force?

If water is heated up, will it be able to hold more or less oxygen?

Approximately how much of Canada was covered in ice during the peak of the last ice age?

What percentage of the Earth's water is freshwater?

Runoff from which of the following causes rapid growth of vegetation in lakes and ponds?

What is the average salt concentration of saltwater?

What is the best pH range for most life in a lake?

Lac La Ronge is a ______________ lake.

Earth, and everything in it, uses the same water over and over again.

What is the main salt in saltwater?

_________________ freezes in winter.

What do we call the release of water into the air by plants?

The pH scale goes from ____ to ____

Which has a greater density?

Which of these are formed by retreating glaciers?

What is the pH of pure water?

The energy that powers the water cycle comes mostly from the sun.

Their death causes bacteria to reproduce rapidly to break them down.How is the water affected?

462 000 people live on reserves in Canada. How many of these people rely on poor water systems?

What is it called when water changes from a solid (ice) to a gas (water vapour)?

Which level of government regulates and monitors most water quality across Canada?

La Ronge is located in the _____________________ watershed

Which level of government is responsible for water systems on reserves?

What is the process in which water changes state from a liquid to a gas?

When precipitation falls from the clouds, it can collect in:

Which bodies of water tend to have greater biodiversity (more species)?

Solid (ice, snow) or liquid (rain) water that falls from clouds is called:

When the lower algae/plants don't get light, what happens?

Are you feeling ready for the science test?

Ocean currents are created by:

Clouds form from the condensation of:

What percentage of the Earth's freshwater is in ice?