WorksheetsInner Core
Total questions: 8
Worksheet time: 6mins
The inner core is how many miles in Diameter?
151 miles
1516 miles
1600 miles
161 miles
How hot is the Earth's inner core?
5000 to 9000 degrees F
9000 degrees F
9000 to 11000 degrees F
9000 to 13000 degrees F
Where do the high temperatures of the Earth's inner core come from?
From the leftover heat of Earth's formation, gravity and radioactive decay.
From the gravitational forces around Earth and the Sun.
From the Sun and the moon.
From the leftover heat of Earth's formation, the moon's gravity field and the Sun.
The Earth's core is a solid ball of metal.
True
False
What elements are in the Inner Core?
Gold, Nickel, Aluminum, Silicon and others
Silver, Iron, Magnesium, Oxygen and others
Iron, Nickel, Sulfur, Oxygen and others
Iron, Gold, Sulfur, Nitrogen and others
Even though the inner core is very hot, the elements do not _________________ , and remain in a ________________ state.
freeze, solid
melt, liquid
crumble, solid
melt, solid
Why does the inner core remain solid?
Because of the Earth's gravitational field.
Because of the pressure/weight coming from the other layers.
Because the radioactive material in the core.
Because of the elements in the three other layers.
What did the people at Columbia University discover?
The Inner Core may move slightly faster than the rest of the planet.
The Inner Core has its own gravitational field.
The inner core may move slightly slower than the rest of the planet.
The inner core has more elements in it than the other layers.
