All About Earth

Eric AngatTeacher

Essential Question

How do I describe our planet?

•The Sun powers photosynthesis.•The Sun makes our planet warm.

1. Give two reasons why the Sun is so important.

heat

2. Give two reasons why we need plants.

Lessens greenhouse gases or CO2.

•We need plants to have food & oxygen.•We need plants to slow down global warming.

food

O2

Atmosphere – air that envelopes Earth.

3. What is the most abundant gas in the atmosphere? Abundant=plentiful

Hydrosphere describes the combined mass of water found on, under, and over the surface of a planet.

4. How much of Earth is covered with water?

5. How many percent of Earth’s water is readily usable to us?

Not readily usable because of its salt content

Not readily usable because it is solid.

Seasons and distance from the Sun

http://dolio.lh.net/~apw/astro/sun.html

Winter-USASummer-USA

Summer-Australia

Winter-Australia

Far

Near

summer

winter

Southern hemisphere is tilted towards the Sun.

Northern hemisphere is tilted away from Sun.

6. What causes the seasons on Earth?

Earth’s tilt and its revolution around the Sun produce seasons.

EQUATOR

Amazon rainforest

https://www.youtube.com/watch?v=KUF_Ckv8HbE

Maps That Prove You Don't Really Know Earth

December-February- SUMMERMarch-May - FALL.June-August- WINTER.September-November - SPRING

SEASONS in Buenos Aires Argentina: The 4 Seasons

Copy and answer the following questions.

7. What is the atmosphere?8. What is the hydrosphere?9. How does the cycle of oxygen and

carbon dioxide happen?10. What are the four layers of Earth?11. What is rotation?12. What is revolution?

https://www.youtube.com/watch?v=C34BW3fwtE4

Copy and answer the following questions.7. What is the atmosphere?

8. What is the hydrosphere?

9. How does the constant cycle of oxygen and carbon dioxide happen?

is the air that surrounds Earth.

is the sum of all the water on Earth.

Plants use carbon dioxide and create oxygen and we use oxygen and create carbon dioxide.

Copy and answer the following questions.10. What are the four layers of Earth?

11. What is rotation?

12. What is revolution?

Crust, mantle, outer core, and inner core.

Spinning of a planet or a moon on its axis. This causes day and night.

Earth and other planets moving around the Barycenter. Earth’s tilt as it revolves around the Sun causes seasons.