
Unit 10 Pre-Assessment
Authored by Mackenzie Kroll
Science
8th Grade
TEKS covered
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary source of energy for most ecosystems?
The Moon
The Sun
The Ocean
The Wind
Tags
TEKS.SCI.8.12A
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a natural disaster that can disrupt an ecosystem?
Deforestation
Earthquake
Urbanization
Agriculture
Tags
TEKS.SCI.8.12A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does biodiversity contribute to the stability of an ecosystem?
By reducing the number of species
By increasing the variety of species
By eliminating predators
By promoting monocultures
Tags
TEKS.SCI.8.12C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process describes the gradual change in species composition in an ecosystem over time?
Photosynthesis
Ecological succession
Erosion
Transpiration
Tags
TEKS.SCI.8.12B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain how a decrease in a predator population might affect the energy transfer in a food web.
It would increase the energy transfer to producers.
It would decrease the energy transfer to herbivores.
It would increase the energy transfer to herbivores.
It would have no effect on energy transfer.
Tags
TEKS.SCI.8.12A
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the role of primary succession in an ecosystem after a volcanic eruption.
It immediately restores the original ecosystem.
It begins with the colonization of pioneer species.
It results in the extinction of all species.
It prevents any new species from entering the area.
Tags
TEKS.SCI.8.12B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How might human intervention, such as pollution, impact the stability of an ecosystem?
It always increases biodiversity.
It can lead to a decrease in biodiversity.
It has no impact on ecosystems.
It always stabilizes ecosystems.
Tags
TEKS.SCI.8.12A
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