8th Grade Science - you got this!
Quiz by Amy Paksoy
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- Q1
What group on the periodic table will likely not react?
group 18 (the Noble Gases)
Group 1 (the Alkali Metals)
Group 2 (the Alkaline Earth Metals)
30s - Q2
What phase (state of matter is most of Earth's freshwater?
liquid
gas
solid
30s - Q3
The process of replanting trees and other vegetation in a mined area is called ____________.
reclamation
deforestation
clear-cutting
sedimentation
30s - Q4
Which is not a direct source of water pollution but may cause water quality issues?
deforestation
waste from ships
industrial waste
agricultural run off
30s - Q5
What life form is most likely in the lowest level of sedimentary rock?
ferns
simple marine organisms
dinosaurs
humans
30s - Q6
What is the energy source for algae?
plankton
sun
people
30s - Q7
Which is an abiotic factor in an ecosystem?
decomposers
tree
fungi
water
30s - Q8
Brackish water is found _______________________
where rivers flow into the ocean - the estuary
at the beginning of a river
in middle school bathrooms
30s - Q9
Evidence of geologic history can be found in ___________
fossils
rock samples
atmosphere
30s - Q10
Ice cores are used to study _________________.
past life forms
past climates
30s - Q11
What would help scientists know that rock layers formed at the same time hundreds of miles apart?
trees in the same place
index fossils in the same layer
animals that are similar
30s - Q12
How can a scientist determine if an igneous intrusion is OLDER or YOUNGER?
use radiometric dating on the igneous rock
analyze rock positions
determine what type of rock the igneous intrusion is
30s - Q13
Which process of the water cycle would increase the salinity of the ocean?
evaporation
condensation
precipitation
30s - Q14
Which of the following can be physically separated by being filtered?
compound
element
mixture
30s - Q15
Why are decomposers important in an ecosystem?
they look pretty
animals feed on them
they return nutrients to the soil
30s