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WorksheetsCFB 7th Grade IA#3 Review
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
If rainforest soil is poor, how are plants able to grow?
a)
They don't need nutrients
b)
Decay is slow so nutrients are washed away
c)
Decay is fast, so nutrients can be absorbed before they are washed away
d)
The roots grow deep into the ground to get the nutrients
2.
What happens as plants and animals die?
a)
The biomass sits in landfills for thousands of years
b)
The biomass increases because new matter is formed
c)
The biomass undergoes photosynthesis
d)
The biomass is broken down by decomposers, returning nutrients to the soil
3.
Which is in a population with a prairie dog?
a)
ponds and lakes
b)
rabbits
c)
other prairie dogs
d)
hawks
4.
Which is in a community with a prairie dog?
a)
ponds and lakes
b)
rabbits
c)
rocks and dirt
d)
sunlight
5.
Which is in an ecosystem with a prairie dog?
a)
ponds and lakes
b)
rabbits
c)
other prairie dogs
d)
all of these
6.
What would happen if all the producers were removed from an ecosystem?
a)
Nothing
b)
All of the top predators would die first
c)
The decomposers would die suddenly
d)
The primary consumers would have nothing to eat
7.
If finches have a common ancestor, why do they have different characteristics in different areas?
a)
because of selective breeding
b)
because of primary succession
c)
because of natural selection
d)
because of hibernation
8.
Which subatomic particles make up the mass of an atom?
a)
Protons and Electrons
b)
Protons, Neutrons, and Electrons
c)
Neutrons and Electrons
d)
Protons and Neutrons
9.
CHNOPS (Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur) are known as the ___________.
a)
Metalloids
b)
Noble Gases
c)
Biochemical Elements
d)
Atomic Elements
10.
The biochemical elements are all ____________.
a)
Metals
b)
Non-metals
c)
Metalloids
d)
Noble Gases
11.
On the periodic table of elements, groups/families are:
a)
up and down (vertical)
b)
across (horizontal)
c)
zig- zagged
d)
at the bottom
12.
On the periodic table of elements, periods are:
a)
up and down (vertical)
b)
across (horizontal)
c)
zig- zagged
d)
at the bottom
13.
Elements in the same group/family:
a)
are in alphabetical order
b)
have a similar atomic mass
c)
have similar # of protons
d)
react in similar ways
14.
Protons are located
a)
in the electron cloud with the electrons
b)
in the electron cloud with the neutrons
c)
in the nucleus with the neutrons
d)
in the nucleus with the electrons
15.
Electrons are located
a)
in the electron cloud with the neutrons
b)
in the electron cloud
c)
in the nucleus with the neutrons
d)
in the nucleus with the electrons
16.
Neutrons are located
a)
in the electron cloud with the electrons
b)
in the electron cloud with the protons
c)
in the nucleus with the protons
d)
in the nucleus with the electrons
17.
If there are white and brown rabbits in an area covered with snow, what will most likely happen over time?
a)
The population of brown rabbits will increase
b)
The population of white rabbits will increase
c)
The population of white rabbits will decrease
d)
The population of brown rabbits will decrease
18.
A carnivore eats
a)
meat only
b)
plants only
c)
meat and plants
d)
dead organisms only
19.
An herbivore eats
a)
meat only
b)
plants only
c)
meat and plants
d)
dead organisms only
20.
An omnivore eats
a)
meat only
b)
plants only
c)
meat and plants
d)
dead organisms only
21.
Which of the following is a producer?
a)
rabbit
b)
rocks
c)
grass
d)
top predator
22.
How do dead plants and animals help their own ecosystem?
a)
They repel diseased animals
b)
They increase erosion
c)
They break down and provide nutrients for other organisms
d)
They wash into the ocean and provide food for the fish
23.
What might happen when resources are scarce (limited)?
a)
increased competition
b)
decreased competition
c)
increased succession
d)
decreased sunlight
24.
All organic compounds contain
a)
nitrogen
b)
sulfur
c)
carbon
d)
helium
25.
The density is 6. The volume is 3. What is the mass?
a)
3
b)
9
c)
2
d)
18
26.
The mass is 6. The density is 3. What is the volume?
a)
3
b)
9
c)
2
d)
18
27.
The elements on the left side of the periodic table are generally
a)
more reactive and poor conductors
b)
more reactive and good conductors
c)
less reactive and poor conductors
d)
less reactive and good conductors
28.
The elements on the right side of the periodic table are generally
a)
more reactive and poor conductors
b)
more reactive, good conductors, shiny, malleable
c)
less reactive, poor conductors, dull, brittle
d)
less reactive and good conductors
29.
An atom's identity is determined by its
a)
number of neutrons
b)
number of protons
c)
number of energy shells
d)
nickname
30.
Which of the following is a compound?
a)
Na
b)
He
c)
NO
d)
Ag
31.
Which of the following is an element?
a)
Na
b)
HCl
c)
NO
d)
NaCl
32.
In primary succession, what appears directly after lichen and moss?
a)
mature trees
b)
bare rock
c)
thin layer of soil
d)
tall grasses
33.
Density is often expressed as
a)
g/mL
b)
g
c)
mL
d)
mph
34.
Volume is often measured in
a)
g/mL
b)
g
c)
mL
d)
mph
35.
Mass is often measured in
a)
g/mL
b)
g
c)
mL
d)
mph
36.
A white solid that forms in a chemical change is a
a)
precipitate
b)
mixture
c)
molecule
d)
compound
37.
In a chemical change
a)
the substance changes appearance only
b)
a new substance is formed
c)
there is a states of matter change only
d)
there is always an explosion
38.
A proton's charge is
a)
positive
b)
negative
c)
neutral/no charge
d)
electric
39.
A neutron's charge is
a)
positive
b)
negative
c)
neutral/no charge
d)
electric
40.
An electron's charge is
a)
positive
b)
negative
c)
neutral/no charge
d)
in the nucleus
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