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POST Test 7th Grade Part A
Test Description: POST test 7th grade
Instructions: Answer all questions to get your test result.
1) The law of superposition state that, in horizontal layers of sedimentary rock,
A
are pretty
B
are the same age
C
each layer is younger than the layer above it
D
each layer is older than the layer above it
2) Decomposers are the soil organisms that
A
break down and digest the remains of dead organisms
B
burrow deep below the topsoil
C
make spaces in the soil for air and water
D
store moisture in the soil
3) When a jellyfish paralyzes a tiny fish with its poisonous tentacles, the fish is the
A
predator
B
parasite
C
prey
D
host
4) During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the
A
manipulated variable
B
constant
C
responding variable
D
dependent variable
5) If a ferret eats a mouse that eats grass, the ferret is a
A
producer
B
second level consumer
C
decomposer
D
first-level consumer
6) Explaining or interpreting the things you observe based on reasoning from what you already know is called
A
inferring
B
observing
C
classifying
D
predicting
7) Because atoms are so small,
A
they can not be made of smaller particles
B
there is no way to describe them
C
scientists create models to describe them
D
they can not be seen at all
8) Fossil fuels are considered nonrenewable because they
A
pollute the air
B
take hundreds of millions of years to form
C
are in such high demand
D
burn so quickly
9) A material is said to be ductile if it
A
can transfer heat or electricity to another material
B
is a mixture of a metal with at least one other element
C
can be hammered or rolled into flat sheets and other shapes
D
can be pulled out and drawn into a wire
10) Pure water is neutral, meaning it is neither an acid nor a base. Pure water has a pH of
A
14
B
0
C
10
D
7
11) How would a hot and wet climate affect the rate of weathering?
A
it stops weathering
B
it occurs more slowly
C
it occurs more rapidly
D
it does not change
12) The three major fossil fuels are coal, oil and
A
electricity
B
wood
C
natural gas
D
uranium
13) Which part of the atom move around the nucleus?
A
electrons
B
protons
C
chloroplasts
D
neutrons
14) Which of the following is a biotic factor in the prairie ecosystem?
A
water
B
sunlight
C
soil
D
grass
15) When scientists put things into catergories or group together items that are alike in some way, they are
A
predicting
B
making models
C
classyfying
D
inferring
16) The elements in a column of the periodic table
A
are in the same period
B
have very similar chemical symbols
C
have the same atomic mass
D
have similar properties
17) When scientists create a representation of a complex process, they are
A
classying
B
predicting
C
inferring
D
making models
18) From an element's location in the periodic table, you can predict
A
when it was discovered
B
its chemical symbol
C
the chemical name
D
its properites
19) The behaviors and physical characteistics of species that allow them to live successfully in their environment are called
A
limiting factors
B
biotic factors
C
adaptation
D
habitats
20) Observations that deal with number or amount are called
A
quantitative observations
B
false observations
C
controlled observations
D
qualitative observations
*select an answer for all questions
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