The ___________ explains how our solar system probably formed from a giant cloud

Question

The ___________ explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles.

Question 1 options:

extrastellar solar hypothesis

planetary compression theory

protogalactic theory

nebular hypothesis

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Question 2 (1 point)

As the solar system formed _________ moved toward the center of the accretionary disk, whereas _________ moved away from the center.

Question 2 options:

heavier material, lighter material

gas, dust

stars, supernovae

planets, asteroids

comets, meteoroids

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Question 3 (1 point)

Which of the following is an extraterrestrial object made of ice and dust that can be up to 100 miles across?

Question 3 options:

meteoroid

asteroid

PHA

NEO

comet

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Question 4 (1 point)

A meteoroid is .....

Question 4 options:

a rocky body from 10m to 1,000km across.

an extraterrestial body that 'burns up' in the Earth's atmosphere.

a rocky body that is relatively small, up to 10m across.

a metallic body no more than 1 m in diameter, found on the Earth's surface.

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Question 5 (1 point)

Comets have their origins in the

Question 5 options:

Orion's Belt

Asteroid Belt

Comet Cloud

Oort Cloud

A "NEO" is .....

Question 6 options:

an object that has struck the Earth.

an object that passes close to the Earth during its orbit.

a comet

a New Earth Object.

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Question 7 (1 point)

Over Earth's history, the rate of meteorite impacts ....

Question 7 options:

has increased with time.

has decreased with time.

started slowly, increased rapidly, and is now relatively stable.

has remained unchanged over geologic time.

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Question 8 (1 point)

Aerial bursts occur because....

Question 8 options:

asteroids are made of explosive compounds.

of frictional heating in the Earth's atmosphere.

a meteorite is mostly rocky, with some being metallic.

of complicated shear forces within the meteorite itself.

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Question 9 (1 point)

A (an) _________ probably caused the Tunguska event of 1908.

Question 9 options:

aerial explosion of an asteroid over central Siberia, Russia.

impact of a comet fragment into central Siberia, Russia.

impact of a small, low-velocity iron meteorite in northern Arizona.

aerial explosion of a comet over northern Arizona.

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Question 10 (1 point)

The Manson impact structure is found in ___________.

Question 10 options:

northwestern Iowa

central Arizona

eastern Siberia

southern Mexico

Question 11 (1 point)

The basis for the impact hypothesis of dinosaur extinction is .....

Question 11 options:

a huge impact crater, which we can see from space.

a small impact crater, dated to the time of the extinction event 65 m.y.a.

a thin clay layer at the K-T boundary in many rocks around the world.

burnt dinosaur bones.

a mass extinction.

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Question 12 (1 point)

One potential cause of mass extinctions in the distant past is __________.

Question 12 options:

the loss of most species on the planet.

rapid climate change.

a huge flood over most of the Earth.

Humans over-hunting and destroying the environment.

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Question 13 (1 point)

When a meteorite or asteroid strikes the ground, the effect of the impact is ___________.

Question 13 options:

a crater

a release of thermal radiation

up-turned beds of sedimentary rock

ground tremors

all of these

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Question 14 (1 point)

One of the reasons that the Earth's surface is not covered with deep impact craters is because....

Question 14 options:

not many meteorites have hit the Earth over geologic time.

erosion and sedimentation have covered or erased them.

most impacts don't make craters.

all the craters are filled with water.

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Question 15 (1 point)

Besides a crater, evidence of an impact could be _________.

Question 15 options:

Shocked mineral grains

Burnt rocks

Eroded material

Divergent boundaries

extrastellar solar hypothesis

planetary compression theory

protogalactic theory

nebular hypothesis

Explanation / Answer

1. Nebular hypothesis

2. Planets, asteriods

3. Meteoroid

4. An extraterrestrial body that' burns up' in Earth's atmosphere.

5. Oort clouds

6. Comet

7. Started slowly, increased rapidly and is now relatively stable

8. Astoroids are made of explosive compounds

9. Aerial explosion of a asteroiod over Central Siberia, Russia

10. Northwestern lowa

11. A thin clay layer at the K-T boundary in many rocks around the world

12. The loss of most species on the planet

13. All of these

14. Erosion and sedimentation have covered or erased them

15. Shocked mineral grains

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