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NC 8th Grade EOG Review 2
Test Description: EOG Review
Instructions: Answer all questions to get your test result.
1) Which pair of elements has the most similar properties?
A
Li and B
B
N and P
C
I and Ca
D
K and He
2) If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products?
A
12 atoms of carbon (C)
B
2 atoms of carbon (C)
C
3 atoms of carbon (C)
D
6 atoms of carbon (C)
3) Which is a possible disadvantage of using flowing water to produce electricity?
A
creates reservoirs
B
ecosystem damage and loss of land
C
only suitable for industrial use
D
reduced carbon dioxide emission
4) Why is water from an aquifer more likely to be cleaner than water from other sources?
A
because pollutants are filtered by rock and soil deep within Earth
B
because it forms where fresh and salt water meet
C
because it receives water directly from precipitation
D
because it rises to the surface near the ocean
5) In which oceanic zone do clams and crabs survive by burrowing in the sand?
A
deep ocean
B
open ocean
C
intertidal
D
oceanic
6) If a body of water has high turbidity levels, what can most likely be concluded?
A
It is too hot to drink.
B
It is unsafe to drink.
C
It contains a lot of chemicals.
D
It has a low pH.
7) Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle rock layer of the cliff. Which could best be concluded from this evidence?
A
Dinosaurs and mammals lived at the same time.
B
Dinosaurs lived on Earth before the mammals.
C
Dinosaurs were eaten by the mammals.
D
Dinosaurs ate plants.
8) Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?
A
contact with an infected person
B
contact with a contaminated object
C
contact with environmental sources
D
contact with an infected animal
9) Which is the best way to help prevent the flu from becoming a pandemic?
A
washing hands often
B
getting a vaccination
C
taking antibiotics
D
eating fruits and vegetables
10) Which best explains the importance of nitrogen in the cycling of energy and matter?
A
Nitrogen decreases the effectiveness of photosynthesis.
B
Nitrogen increases the effectiveness of photosynthesis.
C
Nitrogen increases protein production in plants.
D
Nitrogen decreases protein production in plants.
11) Which is a way the agricultural biotechnology industry could have a positive impact on the environment?
A
by reducing the need for countries to import food
B
by increasing the use of wind farms that produce electricity
C
by making robots to replace large farm machines
D
by producing crops that are virus resistant
12) If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
A
The population of deer will become extinct.
B
The population of deer will increase.
C
The population of deer will remain the same.
D
The population of deer will decrease.
13) Where do plants get most of the energy they need to live and grow?
A
water
B
soil
C
sunlight
D
air
14) Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence supports this hypothesis?
A
They live in the same area of the ocean.
B
They eat the same food.
C
They swim the same way.
D
They have similar anatomies.
15) In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What most likely causes the fur of the fox to change color?
A
the fox’s habitat
B
the fox’s genes
C
the amount of sunlight present
D
the fox’s age
16) Which would best allow a species to survive environmental changes?
A
small population
B
genetic diversity
C
similar physical features
D
low mutation rate
17) How would smoking tobacco most likely have a negative impact on the ability of an individual to succeed at physical activities?
A
It decreases the ability to make decisions rapidly
B
It decreases the speed and power of muscle contractions
C
It interferes with balance and coordination
D
It decreases stamina and cardiovascular efficiency
18) Which shows one example of a physical change and one example of a chemical change?
A
freezing water and burning coal
B
boiling water and melting wax
C
dissolving powder and shredding paper
D
rusting iron and baking a cake
19) How does a balanced chemical equation satisfy the Law of Conservation of Mass?
A
During a chemical reaction, one or more new substances are formed.
B
During a chemical reaction, the total number of atoms increases.
C
During a chemical reaction, matter is destroyed.
D
During a chemical reaction, the total amount of matter stays the same.
20) Which is a problem with using wind turbines to produce energy?
A
Wind turbines create a large amount of pollution
B
Wind turbines occupy a small area of land
C
Wind turbines are efficient only in certain areas
D
Wind turbines produce a large amount of energy
*select an answer for all questions
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