Landforms

Science STAAR Review

This are some concepts we will learn about today:

Natural Resources

Fossil Fuels

Sedimentary Rock formation

Earth’s Surface

Landform

Open Ended

Which of the concepts from the previous slide can you say something about? Write about at least one of them in the text box.

- Natural Resources

- Fossil Fuels

- Sedimentary Rock formation

- Earth’s Surface

- Landform

Natural Resources

• Supplies from nature

• Everything on or around the Earth that we use to survive

• Examples: coal, oil, iron, timber, rivers, animals, and sunlight.

Multiple Select

Check all the natural resources below.

• The Sun

• Oil

• Cheeseburger

• Animals

• Money

Open Ended

From what natural resources do you think money is made from?

Money is made from the following natural resources:

• Trees (paper)

• Minerals (used for the coins)

• Plants and oils (ink)

There are two types of natural resources: Renewable and Nonrenewable

- Renewable resources are things that can be replaced in a relatively short amount of time. Ex: plants, animals, water.

We must be wise about how we use them still as we could destroy them too fast for them to be replaced.

- Nonrenewable resources are things that cannot be replaced in a short amount of time, they were made from dead plants and animals millions of years ago. Once we use them up they will be gone forever. Ex: fossil fuels (coal, oil, natural gas), and minerals.

Multiple Choice

Are plants a renewable or nonrenewable natural resource?

• Renewable

• Nonrenewable

Multiple Choice

Are ocean tides a renewable or nonrenewable natural resource?

• Renewable

• Nonrenewable

Multiple Choice

Is coal a renewable or nonrenewable natural resource?

• Renewable

• Nonrenewable

Fossil Fuels

Are fuels that formed from the decayed remains of ancient plants and animals. For example: Coal, oil, and, and natural gas.

Multiple Choice

If oil is a fossil fuel, which is most likely the way it is formed?

• As plants began to expand on the sea floor, new plants were formed. The new plants then began to deposit new oils.

• As algae died and fell to the seafloor. They were buried under sediment and other rock. Then the algae eventually turned into oil under pressure and heat.

Sedimentary Rock Formation

• Rock that is formed when pieces of sediment are cemented back together to make new rock

So, how do the pieces of sediment come together to form a sedimentary rock? Magic? No.

Sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.

Open Ended

What does deposition mean? Think of the word "deposit" or "dropping" when answering this question.

Earth's Surface

• Earth, our home, is the third planet from the sun. It is the only planet known to have an atmosphere containing free oxygen, oceans of liquid water on its surface, and, of course, life.

• About 71% of Earth's surface is covered by water, most of it in the oceans. About a fifth of Earth's atmosphere is made up of oxygen, produced by plants. While scientists have been studying our planet for centuries, much has been learned in recent decades by studying pictures of Earth from space.

• Orbital characteristics Earth spins on an imaginary line called an axis that runs from the North Pole to the South Pole, while also orbiting the sun. It takes Earth 23.934 hours to complete a rotation on its axis, and roughly 365.24 days to complete an orbit around the sun.

Landforms

Landforms are natural features of earth's surface.

Many examples are: Mountain, hill, valley, canyon, cliff, plain, plateau, desert, beach, dune.

Landforms are always changing, in other words Earth's surface is always changing. Why?

Slow reasons: Weathering, erosion, and deposition!

Fast reasons: earthquakes, volcanoes, tsunamis, tornados, etc!

Multiple Select

True/False

Earth's surface has stayed the same for thousands of years.

• True

• False