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8th Grade Science EOG Review Part I
Test Description: Students review for the 8th Grade Science Essential Standards EOG in North Carolina.
Instructions: Answer all questions to get your test result.
1) Which is the best example of a pure substance?
A
milk
B
air
C
peanuts
D
gold
2) Which statement best explains how periods on the periodic table are organized?
A
decreasing number of electrons from left to right
B
decreasing atomic mass number from left to right
C
increasing atomic number from left to right
D
increasing number of neutrons from left to right
3) What happens to the molecules of an ice cube that is placed in a heated pan?
A
The molecules will begin to move faster
B
The molecules will begin to increase in density
C
The molecules will begin to move slower
D
the molecules will begin to condense into the air
4) Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?
A
precipitates were created in the new solution
B
a physical change occurred
C
atoms involved in the reaction lost mass
D
gases were released into the atmosphere
5) Which would least likely have an impact on global climate changes?
A
producing energy using natural gas
B
producing energy using coal
C
producing energy using oil
D
producing energy using hydroelectric plants
6) Which is an example of a renewable energy resource?
A
oil
B
coal
C
gas
D
biomass
7) Which will most likely result if there is increased upwelling in a coastal area?
A
higher water temperatures
B
fewer nitrates
C
more aquatic life
D
less nutrients in the water
8) Which best determines the health of a lake used as a source of freshwater?
A
its temperature and depth
B
its location and depth
C
its temperature and pH
D
its depth and width
9) What could help a scientists determine the approximate age of newly discovered dinosaur bones?
A
the birds living in the area of the bones
B
the index fossils living in the area of the bones
C
the weather conditions in the area of the bones
D
the kinds of trees living in the area of the bones
10) Which best describes how ice cores are important to the study of geologic history?
A
They hold index fossils which are used to date the different ice cores
B
They follow the law of superposition, which gives reasons for extinctions of species
C
They contain evidence showing changes in the atmospheric composition over time
D
They show unconformities, which signal changes in deposition
*select an answer for all questions
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