12-2 The Inner and Outer Planets

What are the four outer planets?

• Jupiter, Saturn, Uranus and Neptune

• Mercury, Venus, Earth, and Mars

• Mercury, Venus, Uranus and Neptune

• Jupiter, Saturn, Earth, and Mars

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NGSS.MS-ESS1-3

What is a year in astronomy terms?

• A year is the time it takes the planet to revolve once around the sun

• A year is the time it takes the planet to rotate once around the sun

• A year is the time it takes the sun to rotate once around the planets

• A year is the time it takes the sun to revolve once around the planets

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NGSS.MS-ESS1-1

Which terrestrial planet is farther from the sun than Earth?

• Mercury

• Mars

• Jupiter

• Neptune

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NGSS.MS-ESS1-3

Why are Mercury’s surface temperatures so extreme?

• Mercury’s surface temperatures so extreme since there is no atmosphere

• Mercury’s surface temperatures so extreme since it is so close to the sun

• Mercury’s surface temperatures so extreme since it is covered with craiters

• Mercury’s surface temperatures so extreme since it has a very thick atmosphere

Which statement is NOT how we have learned about other planets

• human explorations on the other planets

• flybys by unmanned spacecrafts

• Using electromagnetic imaging

• Using Doppler radar detection method.

Why was it necessary to use radar to produce an image of Venus’s surface?

• We cannot see Venus’s through the sun's rays.

• The planet spins slowly on its axis in a direction opposite that of most other planets.

• We cannot see through Venus’s atmosphere to its surface.

• The surface temperatures on Venus is too hot

What is a reason that life as we know it cannot exist on Venus.

• Venus’s atmosphere is made up mainly of carbon dioxide and sulfuric acid.

• The atmosphere is so thick that atmospheric pressure on Venus’s surface is more than 90 times the pressure on Earth

• The carbon dioxide traps radiation from the sun, causing heat to build up to as much as 700 K

• All of these are reasons life cannot exist on Venus

Which two gases make up 99% of Earth’s atmosphere?

• Nitrogen and oxygen

• Oxygen and Carbon

• Water and Nitrogen

• Carbon and Oxygen

More objects from space strike the surface of Mercury than strike Earth’s surface. What do you think is the reason for this?

• Mercury has a much thicker atmosphere than the Earth, which allowed space debris to hit the surface easier.

• Mercury's atmosphere is not thick enough to cause object from space to break apart before hitting the surface

• Earth's atmosphere deflected incoming space debris away from the surface of the planet.

Why do some scientists think there may once have been liquid water on Mars’s surface?

• There are features on Mars that look like they were formed by water.

• The temperature of Mars allowed for water to form on its surface.

• Icy comets were observed hitting the surface of Mars thus allowing water to form on its surface.

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NGSS.MS-ESS2-3