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1. The Earth has a two parts to its core, which allow it to move within the Eart

ID: 114672 • Letter: 1

Question

1. The Earth has a two parts to its core, which allow it to move within the Earth. This creates Earth's

A) Carbon dioxide

B) Magnetic field

C) Temperate

2. Plate tectonics plays a role in all of the following except:

A) the Earth’s magnetic field

B) the carbon dioxide cycle

C) the creation of mountain ranges

3. The lunar maria are ____ than the lunar highlands and appear ____ than those highlands.

A) older, darker

B) older, brighter

C) younger, darker

4. Mercury’s interior is unique because it ______.

A) is not iron

B) has created a magnetic field

C) has an unusually larger fraction of iron core

5. The rate of cratering on the Moon is illustrated in your textbook. It is a correct conclusion form the figure that:

A) 4 billion year old craters are more common than 3 billion year old craters

B) one billion year old craters are twice as rare as 2 billion year old craters

C) the maria covered part of the Tyco crater

6. Mars has less water (H20) due to the Solar wind and the lack of magnetic field protection. It destruction has caused all below except for ___.

A) the current appearance of water carved features

B) the introduction of oxygen into iron to make red soil

C) the higher volcanoes on Mars.

Explanation / Answer

1. the answer is b=magnetic fiels
Magnetic field is created by convective currents due to heat escaping from the core

2.The answer is b=the carbondioxide cycle
the remaining two are affected by plate tectonics

3. the answer is a=older and darker

4. the answer is c=has an unusually larger fraction of iron core
mercury doesnt have an atmosphere