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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
Birthrates for both populations will increase.
B
The populations will compete with each other.
C
New species of prey will evolve in the area.
D
One of the populations will become herbivores.
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
survive in dry conditions
B
attract a variety of pollinators
C
mature quickly
D
thrive in wet soil
3) Which is an abiotic change in an ecosystem?
A
Plant photosynthesis rates increase.
B
Annual rainfall totals for an area increase.
C
Aquatic predator survival rates increase.
D
Fish species populations 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
Mineral crystals form as water evaporates from rocks.
B
Moss collects and grows on the surface of rocks.
C
Limestone reacts with acid rain and dissolves.
D
Water freezes in rock cracks and causes the rock to split.
5) A row on the periodic table is called a -
A
group
B
family
C
column
D
period
6) White-footed mice having thicker fur than cactus mice is probably influenced most by the differences in the —
A
food that they eat
B
environmental climates where they live
C
time of day they are active
D
amount of predators they encounter
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
Vacuoles
C
Chromosomes
D
Cell membranes
8) Which facility relies on a nonrenewable source of energy?
A
A power station that burns coal
B
A dam that uses the power of water
C
A wind farm that uses wind turbines
D
A solar farm that collects sunlight
9) As the frequency of a wave decreases, the wave's —
A
wavelength increases
B
speed decreases
C
period decreases
D
amplitude increases
10) Which change will most likely increase the strength of a magnetic field produced by an electromagnet?
A
Reduce the number of turns of the coil
B
Remove the iron nail
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
chromosome
B
genotype
C
phenotype
D
double helix
12) Which of these represents the freezing point of water in correct SI units?
A
32°F
B
0°C
C
-273°C
D
0°F
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 acceleration of the ball is unstable.
B
The motion of the ball is changed by external forces.
C
The force exerted on the ball is greater than gravity.
D
The pressure on the ball changes with altitude.
14) Which characteristic is common to the four outer planets in our solar system?
A
High density
B
Low mass
C
Gaseous composition
D
Fast revolution
15) When comparing a plant cell to an animal cell, only the plant cell will contain —
A
mitochondria
B
ribosomes
C
chromosomes
D
chloroplasts
16) Which of these is the best description of a typical organism in the Plant kingdom?
A
Makes its own food
B
Lacks a cell wall
C
Lacks a nucleus
D
Is unicellular
17) Which of these is a way that a person can help improve air quality?
A
Burn leaves in the fall
B
Use a gas-powered lawn mower
C
Build a compost pile
D
Carpool with several people
*select an answer for all questions
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