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8th Grade Science EOG Review Part VI
Test Description: Essential Standards 8th Grade Science EOG Review
Instructions: Answer all questions to get your test result.
1) How do scientists know that some mountains were once at the bottom of an ocean?
A
saltwater fish are found in some mountain streams
B
freshwater rivers flow to the ocean
C
marine fossils have been found on the peaks of some mountains
D
dinosaur bones have been discovered in the mountains
2) What is the cause of malaria?
A
a fungus
B
a parasite
C
a virus
D
a bacterium
3) How can the rate of an infectious disease be drastically reduced?
A
by taking medication daily
B
by performing dental hygiene three times a day
C
by preventing transmission between people
D
by wearing clean clothing daily
4) What is involved in creating genetically modified bacteria?
A
changing their food source
B
growing them on selected plants
C
allowing them to reproduce freely
D
using biotechnology techniques
5) In a food pyramid, which best explains why the number of organisms decreases from one trophic level to the next?
A
consumers at the top-level require more energy than the lower level consumers
B
consumers at the lower level require more energy than the top-level consumers
C
the consumers are feeding on smaller organisms that have less energy
D
the consumers are feeding on larger organisms that have less energy
6) What process is responsible for the extinction of most species of plants and animals that have lived on Earth?
A
decrease in reproduction
B
selective breeding
C
environmental changes
D
gene mutation
7) What would indicate that a series of fossils represent the evolution of the horse?
A
all of the fossils were found in the same layers of rocks as horse fossils
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 are completely identical to horse bones
8) Which would enable strawberries to survive a hard freeze?
A
The color of the strawberries is darker, so they maintain their temperature better
B
They have larger leaves to protect the fruit than the other strawberries
C
They are able to reproduce more quickly than other strawberries
D
They have different genetic variations that cause them to be more resistant to cold temperatures
9) Which food provides the most energy for the body in the shortest amount of time?
A
meat
B
milk
C
potato
D
fruit
10) Why is protein an important part of a healthy diet?
A
it is needed to store nutrients
B
it is needed to produce water
C
it is needed to repair tissue
D
it is needed to change glucose to energy
*select an answer for all questions
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