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 3/2/10
1. What is an AU?
2. What is an ellipse?
3. List the planets in order from the sun.
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.
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.
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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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SECTIONOUTLINESECTIONOUTLINE
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?