Space Ch 3 Notes

Bell Work 2/23/10

Draw a diagram showing the orbit of Earth and the orbit of Earth’s Moon. Label the Sun, Earth, the Moon, Earth’s orbit, and the Moon’s orbit

Bell Work 2/24/10

List the 8 planets in order from the sun

(After you’re finished with the bell work get out your planet flashcards and instructions)

Bell Work 2/25/10

Other than Earth, what is your favorite planet and why? (write at least 3 sentences)

Bell Work 2/26/10

1. What was your favorite science fair project yesterday?

2. Write 3 sentences explaining the project and why it was your favorite project.

Planets orbit the Sun at different distances.

The planets have different sizes and distances from the Sun.

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VISUALIZATIONCLASSZONE.COM

Take a virtual spaceflight through the solar system.

inner solar system Mercury, Venus, Earth, Mars, asteroids

outer solar system Jupiter, Saturn, Uranus, Neptune, comets

Planets orbit the Sun at different distances.

The solar system formed from a disk of dust and gas. Massive objects became round.

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3.1 Vocab

astronomical unit (AU) - Earth’s average distance from the Sun, which is approximately 150 million kilometers (93 million mi).

Ellipse - An oval or flattened circle.

Bell Work 3/1/10

1. What are the inner planets?

2. What are the outer planets?

Bell Work 3/2/10

1. What is an AU?

2. What is an ellipse?

3. List the planets in order from the sun.

Bell Work 3/3/10

Answer #1 #3 #4 and #5 on page 83 in your book.

Bell Work 3/4/10

1. Which planets are the terrestrial planets?

2. What are the four types of processes that cause surface features?

terrestrial planet

Earth or a planet similar to Earth that has a rocky surface. The four planets in the inner solar system, Mercury, Venus, Earth, and Mars, are terrestrial planets.

tectonics

The processes in which the motion of hot material under a crust changes the crust of a space body. Earth has a specific type of tectonics called plate tectonics.

volcanism

The process of molten material moving from a space body’s hot interior onto its surface.

terrestrial planet

The inner solar system has rocky planets.

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• The terrestrial planets are round and have layers.

• Atmospheres came from volcanoes and impacts.

• Four processes produce surface features. tectonics

volcanism

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impact cratering

tectonics

weathering and erosion

volcanism

Tectonics Volcanism Weathering and Erosion

Impact Cratering

Mercury Formed long, high cliffs

Formed long, smooth plains

Gravity moves broken materials downhill

Made round features on most of the surface

Venus Stretched out, wrinkled, and twisted the surface

Made volcanoes and flat lava plains cover the surface

Surface has not changed much due to lack of water

Scattered impact craters

Earth Plates move and form mountains and valleys

Volcanic mountains erupt

Water as well as wind changes the surface

Few impact craters are still visible

Mars Several volcanoes are higher than any on Earth

The surface changes quickly as a result of fast winds and gravitational forces

Covered the southern hemisphere with old craters

Bell Work 3/5/10

Draw a picture comparing the inner solar system with the outer solar system. Use labels for each planet.

Peach Bell Work is due today!

3.3 Vocab

gas giant - A large planet that consists mostly of gases in a dense form. The four large planets in the outer solar system (Jupiter, Saturn, Uranus, and Neptune) are gas giants.

Ring - In astronomy, a wide, flat zone of small particles that orbit around a planet’s equator.

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The outer solar system has four giant planets.

ring

gas giant• The gas giants have very dense, deep atmospheres

with layers of clouds.

• All four giant planets have ring systems.

Close-up of Saturn’s rings

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3/8/10

1. Which planets have rings?

2. What is a gas giant?

Bell Work 3/9/10

Make a chart comparing an asteroid and a comet

Asteroid Both comet

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Small objects are made of ice and rock.

comet

asteroid

meteor

• Objects in the inner solar system are rocky. • Pluto and most other objects in the outer solar system

are made of ice and rock. • Rocky asteroids and icy comets orbit the Sun and

produce tiny fragments that may become meteors.

meteorite

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The asteroid Eros

Bell Work 3/11/10

1. Why is Pluto's orbit unusual?

2. Why is a comet sometimes bright?

3. What do the weathering and erosion processes on Mars involve?

Bell Work 3/12/10

Answer 7-14 pg 109