Igneous Rocks
Practice Test
1.
According to the Table, which city is farthest north?
City
Latitude
Longitude
Cape Town, South Africa
34°S
18°N
Pontianik, Indonesia
0°
109°E
Nome, Alaska
65°N
165°W
Quito Ecuador
0°
79°W
Stockholm, Sweden
59°N
18°E
Wellington, New Zealand
41°S
175°E
a.
Pontianak, Indonesia
b.
Stockholm, Sweden
c.
Cape Town, South Africa
d.
Wellington, New Zealand
2.
What part of an experiment is used to show that results are due to the condition being tested?
SC.H.1.4.1
a.
control
b.
dependent variable
c.
hypothesis
d.
independent variable
3.
What explains the behavior of natural phenomena?
SC.H.1.4.3
a.
theories
b.
experiments
c.
dependent variables
d.
scientific laws
4.
What is the distance of 1° longitude?
a.
it is always 111 km
b.
360 km
c.
60 km
d.
it changes from 111 km to a point
5.
What do the nuclei of some isotopes release during radioactive decay?
SC.A.2.4.2
a.
lead
b.
radiation
c.
valence electrons
d.
their nuclei
6.
What is a hypothesis?
SC.H.1.4.1
a.
A hypothesis is a suggested explanation of an observation.
b.
A hypothesis is the answer to a scientific question.
c.
A hypothesis is the same as identifying the problem in the scientific method.
d.
A hypothesis is the first step of the scientific method.
7.
An Mg +2 particle has __________ electrons.
SC.A.1.4.5
a.
lost two
b.
gained two
c.
lost four
d.
gained one
8.
An igneous rock with two distinct grain sizes has a __________ texture.
SC.D.1.4.2
a.
coarse-grained
b.
fine-grained
c.
felsic
d.
porphyritic
9.
What is the molten material under Earth's crust called?
a.
magma
b.
minerals
c.
basalt
d.
solution
10.
What is the smallest particle of an element?
a.
an atom
b.
an isotope
c.
a neutron
d.
a proton
11.
A
n
__________ is a solid in which the atoms are arranged in repeating patterns.
a.
crystal
b.
magma
c.
rock
d.
atom
12.
The attraction of two atoms for a shared pair of electrons that hold the atoms together is called __________.
SC.A.1.4.5
a.
a chemical reaction
b.
a compound
c.
a covalent bond
d.
an ionic bond
13.
How does the satellite Topex/Poseidon map ocean features?
a.
visible light
b.
radar
c.
ultraviolet rays
d.
X rays
14.
What branch of Bowen's reaction series cools with a continuous change in composition?
SC.D.1.4.2
a.
the feldspars
b.
the silica chains
c.
the iron-magnesium groups
d.
the carbonates
15.
If a mineral breaks along distinct planes, it is said to have __________.
a.
a high specific gravity
b.
cleavage
c.
fracture
d.
a dull luster
16.
An __________ is an explanation that is based on the results of repeated experiments.
SC.H.1.4.1
a.
hypothesis
b.
control
c.
law
d.
theory
17.
Peridotite and dunite have __________ compositions.
SC.D.1.4.2
a.
mafic
b.
intermediate
c.
ultramafic
d.
felsic
18.
How does a Landsat satellite differentiate between objects on Earth's surface?
a.
Landsat measures the longest frequencies of electromagnetic radiation from Earth.
b.
Features on Earth radiate warmth at different frequencies, which show up as different colors on Landsat images.
c.
Landsat uses a single detector to measure the intensities of energy.
d.
Landsat satellites take pictures using visible light.
19.
A mineral is __________ if it can be mined for profit.
a.
an igneous rock
b.
an ore
c.
a crystal
d.
a rock
