# Earth And Space Science: Midterm Exam

50 Questions | Total Attempts: 107  Settings  Please read carefully and answer all questions in the test booklet. Continue answering questions until you have answered all questions in the test booklet. Mark all answers in a seperate scantron for them to be scored. Good luck, and take your time.

• 1.
An atom is a basic chemical building block of matter. Which particles determine the mass of an atom?
• A.

Protons and neutrons

• B.

Neutrons and electrons

• C.

Protons and electrons

• D.

Neither of the above

• 2.
Which particles refer to the atomic number for an element?
• A.

Neutrons

• B.

Protons

• C.

Electrons

• D.

Quarks

• 3.
How is density calculated?
• A.

Area x Volume

• B.

Volume divided by Mass

• C.

Perimeter + Mass

• D.

Mass divided by Volume

• 4.
What is the density of an object with a volume of 15 cm (cubed) and a mass of 45 g?
• A.

0.33 g/cm

• B.

3 g/cm

• C.

60 g/cm

• D.

675 g/cm

• 5.
What is the density of an object with a volume of 30 cm and a mass of 60 g?
• A.

2 g/cm

• B.

30 g/cm

• C.

10 g/cm

• D.

9 g/cm

• 6.
What is the density of an object with a volume of 30 cm and a mass of 25 g?
• A.

.45 g/cm

• B.

1.2 g/cm

• C.

.83 g/cm

• D.

.60 g/cm

• 7.
If all three of these objects were placed in water (the density of water is 1.0 g/cm), where would the be placed?
• A.

3 g/cm would sink, 2 g/cm would sink, 0.83 g/cm would sink

• B.

3 g/cm would float, 2 g/cm would float, 0.83 g/cm would float

• C.

3 g/cm would sink, 2 g/cm would sink, 0.83 g/cm would float

• D.

3 g/cm would float, 2 g/cm would sink, 0.83 g/cm would sink

• 8.
Which layer of the earth is the thicest, is mainly composed of iron and nickel, and measures a temperature of 5.900 degrees celsius?
• A.

Mantle

• B.

Crust

• C.

Outer Core

• D.

Inner Core

• 9.
What layer of the earth is the asthenosphere located?
• A.

Inner Core

• B.

Outer Core

• C.

Mantle

• D.

Crust

• 10.
A natural ocurring, inorganic crystalline solid with a narrowly defined chemical composition and physical properties.
• A.

Mineral

• B.

Color

• C.

Luster

• D.

Streak

• 11.
Why is color NOT a very a good method to use while identifying minerals?
• A.

Most minerals tend to be the same color

• B.

In some cases, the streak of a mineral is different from its color

• C.

The color of a mineral can be changed and altered due to impurities

• D.

Every mineral has a thin gray coating

• 12.
What is the crystal structure of a mineral?
• A.

The atoms in a mineral are arranged in a consistent geometric pattern

• B.

The color of a mineral in powdered form

• C.

The way a mineral reflects light

• D.

The physical color of a mineral

• 13.
Examples of luster include
• A.

Metallic

• B.

Non-metallic

• C.

Pearly

• D.

All of the above

• 14.
The measure of the ability of a mineral to resist scratching
• A.

Cleavage/Fracture

• B.

Acidity

• C.

Hardness

• D.

Magnetism

• 15.
In geology, the tendency of a mineral to split along specific, smooth planes
• A.

Cleavage

• B.

Fracture

• C.

Both A and B

• D.

Neither A or B

• 16.
Acidity (referring to minerals) can be best defined as
• A.

The tendency of a mineral to split along specific planes

• B.

The ability to attract small particles of minerals that contain iron

• C.

The measure of the ability of a mineral to resist scratching

• D.

The ability to break down as a result of chemical reactions

• 17.
Which of the following is NOT one of the main types of nonsilicate minerals?
• A.

Carbonates

• B.

Feldspars

• C.

Oxides

• D.

Sulfates

• 18.
Which minerals are silicates that contain higher levels of iron and/or magnesium and are dark colored?
• A.

Halides

• B.

Ferromagnesium minerals

• C.

Feldspars

• D.

Sulfides

• 19.
Igneous rock forms when magma, or molten rock, cools and hardens.
• A.

True

• B.

False

• 20.
Sedimentary rock forms when rock is eroded and decomposes into sediment.
• A.

True

• B.

False

• 21.
Metamorphic rock forms when rock is changed by certain forces, which include intense heat and pressure.
• A.

True

• B.

False

• 22.
How does the cooling rate of an igneous rock affect its' texture?
• A.

Cools rapidly, larger crystals. Cools slowly, smaller crystals.

• B.

Cools slowly, larger crystals. Cools rapidly, smaller crystals.

• C.

Both A and B

• D.

Neither A or B

• 23.
The texture of a foliated metamorphic rock is arranged in:
• A.

Parallel planes or bands

• B.

Perpendicular planes or bands

• C.

Parallel spheres or circles

• D.

Alternating colorful bands

• 24.
An example of a silicate mineral is
• A.

Gypsum : CaSO4 x 2Hz0

• B.

Plagioclase : SiOCa

• C.

Galena : PbS

• D.

Halite : NaCI

• 25.
The natural process by which atmospheric and environmental agents, such as wind, rain, and temperature changes, disintegrate and decompose solids.
• A.

Weathering

• B.

Metamorphism

• C.

Oxidation

• D.

Uniformitarianism

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