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8th Grade Science Extend 2 EOG Review Part V
Test Description: Extend 2 Science 8th Grade
Instructions: Answer all questions to get your test result.
1) Which best help scientists to estimate the age of Earth?
A
using radioactive dating of rocks
B
using relative dating of sedimentary rocks
C
using index fossils
2) How do scientists know that some mountains were once at the bottom of an ocean?
A
marine fossils have been found on the peaks of some mountains
B
freshwater rivers flow from the mountains to the ocean
C
saltwater fish live in some mountain streams
3) Which is a product of biotechnology?
A
electronic communications devices
B
video surveillance cameras
C
oil-eating bacteria
4) Which scientific field is responsible for developing medicines that fight against infectious diseases?
A
cardiology
B
kinesiology
C
biotechnology
5) How does water availability affect population size?
A
an increase in water availability leads to an increase in population size
B
a decrease in water availability leads to an increase in population size
C
an increase in water availability leads to a decrease in population size
6) Which is an example of a decomposer?
A
worm
B
cow
C
grass
7) Which characteristic would provide the best evidence that species of livings crabs and lobsters are related to extinct trilobite species?
A
similar body size
B
similar body structures
C
similar habitats
8) Which statement best describes most of the species that have lived on Earth?
A
They still exist on Earth in their original forms
B
Their habitats were located in the desert
C
They are no longer living on Earth
9) Which best describes why sunlight is important for the survival of green plants?
A
it is required for photosynthesis in green plants
B
it is required for absorption of minerals by green plants
C
it is required for production of roots by green plants
10) Which best explains the process of digestion?
A
the body breathes air in to supply oxygen to the lungs
B
the body breaks down food to provide nutrients
C
The body uses energy to make food
*select an answer for all questions
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