Exit Check 8.3 - Earth's Timeline

8.3.1

Which of the following types of rock sample is useful for finding out when planets first formed in the solar system?

• Chondrite Meteorites

• Martian Meteorites

• Moon Samples

• Jack-Hills Zircons

Answer explanation

This question links to success criteria 8.3.1: I can explain the importance of various pieces of evidence for the formation of Earth.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.3.1

Which of the following types of rock sample is useful for finding out when a planet other than earth had cooled enough to form solid rock?

• Chondrite Meteorites

• Martian Meteorites

• Comet Deuterium

• Jack-Hills Zircons

Answer explanation

This question links to success criteria 8.3.1: I can explain the importance of various pieces of evidence for the formation of Earth.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.3.1

Which of the following did the Jack-Hill's Zircons help us more accurately estimate?

• How old the sun is

• How long ago earth's tectonic forces started to act

• How old earth is

• How long ago earth was cool enough for liquid water to pool

Answer explanation

This question links to success criteria 8.3.1: I can explain the importance of various pieces of evidence for the formation of Earth.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.MS-ESS1-4

8.3.2

How did the we figure out where Earth's water came from?

• We measured the percentages of rock and water on comets and asteroids so that we could compare them with Earth's

• We sent out drone rockets to bring back asteroid and comet water so that we could compare their color to the water on Earth.

• We measured the age of water in asteroids and comets so we could see if either was older than Earth

• We measured the types of hydrogen in asteroid and comet water so that we could compare it to Earth water

Answer explanation

This question links to success criteria 8.3.2: I can analyze and interpret evidence of Earth’s early formation from both Earth materials and extraterrestrial rocks.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.3.2

Zircons can form in wet conditions or in dry conditions. How do we know the Jack-Hill's Zircons came from wet conditions?

• All zircons contain oxygen isotopes, and the ratio tells you if the zircons were wet or hot formed. The Jack-Hills zircons had too high of a ratio to be formed in hot conditions.

• All zircons contain hydrogen isotopes, and the types tell you if they were wet or hot formed. The Jack-Hills zircons had the heavier form of hydrogen known as deuterium which only exists in hot conditions.

• All zircons are found in rocks, and the types of rocks the Jack-Hills zircons were found in are formed in hot conditions.

• The zircons found in Jack-Hills were smooth and rounded, a shape that only happens due to erosion by liquid water.

Answer explanation

This question links to success criteria 8.3.2: I can analyze and interpret evidence of Earth’s early formation from both Earth materials and extraterrestrial rocks.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.3.3

If the Jack-Hills Zircons formed in wet conditions which of the following must also be true?

• Earth was cool enough for water to pool before the zircons were formed.

• Earth cooled down enough for water to form after the zircons were formed.

• The Zircons actually came from Mars which got cool long before earth.

• The Zircons are fake.

Answer explanation

This question links to success criteria 8.3.3: I can use evidence to generate a timeline of key events in Earth’s early formation.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

8.3.3

Place the following events in order from first on the left to last on the right.

• Rocks in the planetary nebula began accretion

• Earth finished cooling down.

• Water arrived on Earth through collisions with other objects in space

• The Sun formed

Answer explanation

This question links to success criteria 8.3.3: I can use evidence to generate a timeline of key events in Earth’s early formation.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS2-5

8.3.3

Scientists used to believe that Earth took much longer than Mars or the Moon to cool down and form solid rock. Why did scientists change their mind?

• We recently found older rocks.

• Someone wrote a wonderful C.E.R. showing them that they were wrong.

• They got tired of remembering a different date for different planets cooling down.

• The types of hydrogen found in water ice on comets did not match the hydrogen type found in Earth's water.

Answer explanation

This question links to success criteria: I can use evidence to generate a timeline of key events in Earth’s early formation.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.HS-ESS1-6

8.3.3

Smaller particles collecting together into larger and larger objects is called . . .

• accretion

• contraction

• explosion

• rotation

Answer explanation

This question links to success criteria 8.3.3: I can use evidence to generate a timeline of key events in Earth’s early formation.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.MS-ESS1-2

8.3.3

Based on current scientific evidence, how old is the Earth?

• 6,000 years old

• 460 million years old

• 4.6 billion years old

• 46 billion years old

Answer explanation

This question links to success criteria 8.3.3: I can use evidence to generate a timeline of key events in Earth’s early formation.

If you got it correct place a check mark in the question results section. If you got it incorrect place an X in that section. If this was a redemption question, cross out the one X and replace it with a check mark

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2