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2015 SOL Review Part 2 Of 2
Test Description: Part 2 of the SOL Review for 8th grade science students
Instructions: Answer all questions to get your test result.
1) Which of these is most likely the result of weasels and foxes depending on the same food source?
A
New species of prey will evolve in the area.
B
One of the populations will become herbivores.
C
Birthrates for both populations will increase.
D
The populations will compete with each other.
2) A farmer wants to plant a crop that grows well in a marshland environment. In order to produce a good harvest, the most important characteristic this plant should have is the ability to —
A
attract a variety of pollinators
B
survive in dry conditions
C
mature quickly
D
thrive in wet soil
3) Which is an abiotic change in an ecosystem?
A
Aquatic predator survival rates increase.
B
Plant photosynthesis rates increase.
C
Fish species populations increase.
D
Annual rainfall totals for an area increase.
4) Physical and chemical weathering processes are responsible for breaking down rocks. Which of these is an example of chemical weathering by water?
A
Moss collects and grows on the surface of rocks.
B
Limestone reacts with acid rain and dissolves.
C
Mineral crystals form as water evaporates from rocks.
D
Water freezes in rock cracks and causes the rock to split.
5) A row on the periodic table is called a -
A
column
B
family
C
period
D
group
6) White-footed mice having thicker fur than cactus mice is probably influenced most by the differences in the —
A
environmental climates where they live
B
amount of predators they encounter
C
food that they eat
D
time of day they are active
7) During human fertilization, an egg and a sperm cell unite. Which structures in these cells carry the genes that will be transferred to the offspring?
A
Ribosomes
B
Chromosomes
C
Vacuoles
D
Cell membranes
8) Which facility relies on a nonrenewable source of energy?
A
A dam that uses the power of water
B
A solar farm that collects sunlight
C
A power station that burns coal
D
A wind farm that uses wind turbines
9) As the frequency of a wave decreases, the wave's —
A
period decreases
B
speed decreases
C
amplitude increases
D
wavelength increases
10) Which change will most likely increase the strength of a magnetic field produced by an electromagnet?
A
Remove the iron nail
B
Reduce the number of turns of the coil
C
Add a battery
D
Switch the direction in which the battery is connected
11) The physical expression of a trait in an organism is known as the —
A
double helix
B
chromosome
C
genotype
D
phenotype
12) Which of these represents the freezing point of water in correct SI units?
A
32°F
B
-273°C
C
0°F
D
0°C
13) A girl kicks a soccer ball into the air. Which of these best explains why the soccer ball falls back to Earth?
A
The pressure on the ball changes with altitude.
B
The force exerted on the ball is greater than gravity.
C
The motion of the ball is changed by external forces.
D
The acceleration of the ball is unstable.
14) Which characteristic is common to the four outer planets in our solar system?
A
Fast revolution
B
Low mass
C
Gaseous composition
D
High density
15) When comparing a plant cell to an animal cell, only the plant cell will contain —
A
chromosomes
B
chloroplasts
C
ribosomes
D
mitochondria
16) Which of these is the best description of a typical organism in the Plant kingdom?
A
Lacks a nucleus
B
Lacks a cell wall
C
Makes its own food
D
Is unicellular
17) Which of these is a way that a person can help improve air quality?
A
Use a gas-powered lawn mower
B
Burn leaves in the fall
C
Build a compost pile
D
Carpool with several people
*select an answer for all questions
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