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8th Grade Science EOG Review Part V
Test Description: Essential Standards EOG Review 8th Grade Science Part V
Instructions: Answer all questions to get your test result.
1) Which of the following determines the up and down column in which an element is placed on the periodic table>
A
atomic number
B
similar chemical and physical properties
C
the number of neutrons in the nucleus
D
atomic mass
2) Which shows one example of a physical change and one example of a chemical change?
A
dissolving powder and shredding paper
B
rusting iron and baking a cake
C
boiling water and melting wax
D
freezing water and burning coal
3) How does a balanced chemical equation satisfy the Law of Conservation of Mass?
A
During a chemical reaction, the total amount of matter stays the same.
B
During a chemical reaction, the total number of atoms increases
C
During a chemical reaction, matter is destroyed
D
During a chemical reaction, one or more new substances are formed
4) 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
5) Identify the nonrenewable resource from the choices below?
A
geothermal
B
hydropower
C
biomass
D
coal
6) Which best describes the characteristics of a river basin?
A
the land at the mouth of a river where water flows into the ocean
B
the land formed as the result of a river flooding
C
The land drained by a river and is tributaries
D
the land formed when rivers create estuaries and marshes
7) Which factors can have the greatest effect on the health of a river system?
A
natural disasters and tidal changes
B
type of soil and salinity
C
nitrate levels and turbidity
D
human consumption and pH
8) In the United States, which is responsible for ensuring the safety of the country's drinking water?
A
Food and Drug Administration (FDA)
B
National Oceanic and Atmospheric Administration (NOAA)
C
Environmental Protection Agency (EPA)
D
Center for Disease Control (CDC)
9) Which statement best describes the law of superposition?
A
In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
B
Rocks that form near volcanoes are older than surrounding rock.
C
Each sedimentary layer of rock represents 1,000 years of Earth’s age, much like the rings of a tree.
D
In undisturbed layers of sedimentary rock, the upper rock layers are older than the lower rock layer
10) What do earthquakes tell scientists about the history of the planet?
A
Earth's climate is constantly changing
B
The continents of Earth are continually moving
C
Dinosaurs became extinct about 65 million years ago
D
The oceans are much deeper today than millions of years ago
*select an answer for all questions
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