QUIZ 1 ELS

(a)   is the subsystem that comprises all living components of Earth

The (a)   protects Earth from many planetary yjreats in space such as planetary debris impacts from celestial bodies and radiation.

The (a)   encompasses all the waters found on the Earth.

According to (a)   the universe was once very small and very hot and then it expanded over time.

The portion of the Earth that includes the interior structure, rocks and minerals and all physical process on Earth is called (a)  

Which of the following describe the Mohorovicic discontinuity?

• It is the transitional boundary that divides the crust from the mantle

• It is the transitional boundary the divides the lower mantle from the outer mantle

• It is the transitional boundary the divides the outer core from the inner core

• A and B

Which of the following is true about the properties of water?

• Water could only be in liquid form, it will not become solid or gas

• Water has a neutral pH level

• Water is not a good conductor of heat energy

• Water is a universal solute

What gas makes up the majority of our atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Helium

Class of minerals that are mostly found deposited in marine environments.

• Sulphide Class

• Sulphate Class

• Carbonate Class

• Silicate Class

It indicates the ability of mineral to attract minerals

• Color

• Tenacity

• Streak

• Magnetism