This document appears to be a quiz about earth science concepts. It contains multiple choice questions about the layers of the Earth, the composition of the mantle and core, weathering, rock properties, and the age of the Earth. The questions cover topics such as the thickness of Earth's layers, the composition of the atmosphere and hydrosphere, how minerals and rocks are identified, and processes that change the Earth's surface over time.

1. Presenting the Who
wants to be a
millionaire game
By Cynthia
D-Block

2. Which layer of the earth is the thickest?
Outer Core
crust
Inner Core
Mantle

3. How much salt water takes up the
hydrosphere?
99% 97%
78% 69%

4. What is the solid part of the earth’s
surface called?
Inner core atmosphere
lithosphere hydrosphere

5. The gasses that surround the planet is
called?
atmosphere hydrosphere
lithosphere H20

6. Where are minerals always found?
In Nature In a book
In tree roots in the ocean

7. What is a natural solid that has a
definite shape?
rock crystal
minerals Earth’s crust

8. What has definite properties that help
us identify them?
crystal rock
minerals Chemical properties

9. During the day rocks…
contract freeze
crack expand

10. Weathering just splits the earth’s crust into smaller
and smaller pieces. It does not………the pieces
carry away crack
pressure water

11. Ants, worms, and woodchucks help weathering
because they make….. in the soil
holes pressure
roots air

12. The…..of ice can split a rock
air roots
crack pressure

13. Scientists think the earth was
formed…..years ago
5 hundred thousand 5 billion
3 hundred 2 10 hundred trillion

14. The mantle is about……thick
2800km 2450km
300g 2900km

15. The mantle consists of…..
Hot rocks and gases cool rocks and
water
Hot liquid and is Molten, underground
2200km thick rocks

16. The outer core is made up of…… and
the inner core is made up of…..
boiling water, freezing magma, salt
water
cool rocks, rocks and liquid metals, solid
gases metals