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NC 8th Grade EOG Review 3
Test Description: EOG Review
Instructions: Answer all questions to get your test result.
1) Which best describes the characteristics of a river basin?
A
the land formed when rivers create estuaries and marshes
B
the land formed as a result of a river flooding
C
the land drained by a river and its tributaries
D
the land at the mouth of a river where water flows into the ocean
2) Which factors can have the greatest effect on the health of a river system?
A
type of soil and salinity
B
natural disasters and tidal changes
C
human consumption and pH
D
nitrate levels and turbidity
3) In the United States, which is responsible for ensuring the safety of the country’s drinking water?
A
National Oceanic and Atmospheric Administration (NOAA)
B
Food and Drug Administration (FDA)
C
Center for Disease Control (CDC)
D
Environmental Protection Agency (EPA)
4) Which statement best describes the Law of Superposition?
A
In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layers.
B
Rocks that form near volcanoes are older than surrounding rock
C
In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
D
Each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.
5) What do earthquakes tell scientists about the history of the planet?
A
Dinosaurs became extinct about 65 million years ago
B
The oceans are much deeper today than millions years ago.
C
The continents of Earth are continually moving
D
Earth’s climate is constantly changing
6) How do scientists know that some mountains were once at the bottom of an ocean?
A
Freshwater rivers flow to the ocean.
B
Marine fossils have been found on the peaks of some mountains.
C
Saltwater fish are found in some mountain streams.
D
Dinosaur bones have been discovered in the mountains.
7) Malaria is a common disease in many countries. What is the cause of this disease?
A
a bacterium
B
a parasite
C
a virus
D
a fungus
8) How can the rate of an infectious disease be drastically reduced?
A
by wearing clean clothing daily
B
by taking medication daily
C
by performing dental hygiene three times each day
D
by preventing transmission between people
9) What is involved in creating genetically modified bacteria?
A
growing them on selected plants
B
using biotechnology techniques
C
changing their food source
D
allowing them to reproduce freely
10) In a food pyramid, which best explains why the number of organisms decreases from one trophic level to the next?
A
The consumers are feeding on smaller organisms that have less energy.
B
The consumers are feeding on larger organisms that have less energy.
C
Consumers at the lower level require more energy than the top-level consumers.
D
Consumers at the top level require more energy than the lower-level consumers.
11) What process is most responsible for the extinction of most species of plants and animals that have lived on Earth?
A
selective breeding
B
gene mutation
C
environmental changes
D
decrease in reproduction
12) Which would indicate that a series of fossils represent the evolution of the horse?
A
All of the fossils are completely identical to horse bones
B
All of the fossils show similar structures to that of the modern horse.
C
All of the fossils were located in the same place on Earth as horses
D
All of the fossils were found in the same layers of rocks as horse fossils.
13) A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these strawberries were able to survive?
A
They have larger leaves to protect the fruit than the other strawberries
B
They have different genetic variations that cause them to be more resistant to cold temperatures.
C
They are able to reproduce more quickly than the other strawberries.
D
The color of the strawberries is darker, and they maintain their temperature better than other strawberries.
14) Which food provides the most energy for the body in the shortest amount of time?
A
milk
B
potato
C
fruit
D
meat
15) Why is protein an important part of a healthy diet?
A
It is needed to change glucose to energy
B
It is needed to produce water.
C
It is needed to repair tissue
D
It is needed to store nutrients.
*select an answer for all questions
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