FIRST PERIODICAL TEST

Which best describe planet Earth?

• It has people that live in it.

• It has trees that provide oxygen

• It has soil where trees grow.

• It has liquid water in the surface.

Earth can support the survival of organisms. What is/are the factor/s that

make/s Earth habitable? /s Earth habitable?

I. atmosphere II. energy III. temperature IV. nutrient

• I

• . I, II

• I, II, III,

• I, II, III, IV

It was found out that Earth’s surface is covered with water. Approximately,

how many percent of water comprises the Earth?

• 45% water

• 50% water

• 60% water

• 70% water

Oxygen, water vapor, nitrogen, and other gases help organism to survive.

Which Earth sphere contain these materials?

• biosphere

• atmosphere

• hydrosphere

• geosphere

The atmosphere of the Earth is composed of ___ nitrogen and _____ oxygen

and other gases

• 0% and 100%

• 21% and 78%

• 78% and 21%

• 70% and 30%

Which term is used to describe the thin layer of solid rock that makes up the

outermost part of the Earth?

• core

• crust

• mantle

• biosphere

Quartz can break other than along planes of cleavage. What property

of minerals is shown in this situation?

• Cleavage

• Fracture

• Hardness

• Streak

. Which refers to a naturally occurring, inorganic solid that has a definite

crystalline structure and chemical composition?

• compound

• crystal

• mineral

• rocks

What refers to the tendency for a mineral to break along flat surfaces?

• cleavage

• hardness

• ductility

• tenacity

Igneous rock is divided into two groups, extrusive and intrusive Extrusive igneous

rocks form when magma makes its way to its surface as lava and the cools

forming rocks. Which will be the characteristics of the crystals?

• Crystals are very large

• Crystals are phaneritic.

• Crystals are fine grained

• Crystals are coarse grained.