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Worksheets7th Grade Science Final
Total questions: 34
Worksheet time: 23mins
Name
Class
Date
1.
Which of these show alleles that are heterozygous?
a)
BB
b)
bb
c)
Bc
d)
Bb
2.
Which of these pairs of allele are homozygous recessive?
a)
cc
b)
SS
c)
Tt
d)
Bb
3.
Segements of DNA are called _______________________
a)
Genes
b)
Nuclei
c)
genotypes
d)
Chromosomes
4.
What is Bb
a)
Homozygous
b)
Heterozygous
c)
Recessive
d)
Dominant
5.
What is bb
a)
Homozygous Dominant
b)
Heterozygous
c)
Homozygous Recessive
d)
Genes
6.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
7.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
8.
Requires only one parent
a)
sexual
b)
asexual
9.
What type of asexual reproduction is this?
a)
budding
b)
sporulation
c)
vegetative propagation
d)
binary fission
10.
What process is shown in the diagram?
a)
sexual reproduction
b)
asexual reproduction
c)
digestion
d)
excretion
11.
A scientific statement that explains how or why something happens in nature.
a)
Theory
b)
Law
12.
A scientific statement that tells what will happen in nature. It has been proven true in all places and at all times it has been tested.
a)
Theory
b)
Law
c)
Hypothesis
13.
When new evidence from experiments is presented, how do other scientists make sure that it is correct?
a)
Other scientists accept the experiment if it fits with a current theory.
b)
Other scientists accept the evidence if the experiment has been performed once.
c)
Other scientists try to replicate the experiment to see if they can get the same results.
d)
Other scientists accept the evidence if the experiment was performed 10 times by one scientist.
14.
a)
Refraction
b)
Reflection
15.
The cells produced by this process are genetically identical to parent cells.
a)
Mitosis
b)
Meiosis
16.
What is Deforestation?
a)
A forest in which there are too many deers.
b)
A forest party where deers hang out
c)
The adding of trees in a forest.
d)
The clearing of trees; transforming of a forest into cleared land.
17.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
18.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
19.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
20.
The process of breaking up rocks on Earth's surface is called...
a)
sediment
b)
erosion
c)
weathering
d)
deposition
21.
According to the law of superposition, the oldest fossils are found
a)
At the top of the rock layers
b)
Near the bottom of the rock layers
c)
In the middle of the rock layers
d)
Somewhat near the surface
22.
Which rock layer in the diagram seems to be the oldest?
a)
F
b)
E
c)
B
d)
A
23.
Which is the most accurate method scientists can use to estimate Earth's age?
a)
relativism
b)
superposition
c)
relative dating
d)
radioactive dating
24.
Small, solid pieces of materials from rocks or living things
a)
sediment
b)
clastic rock
c)
organic rock
d)
deposition
25.
Which layer has convection currents?
a)
Inner Core
b)
Outer Core
c)
Mantle
d)
Crust
26.
The theory that says Earth's continents once made up an ancient supercontinent, and have been drifting apart ever since, is called the theory of...
a)
Pangea
b)
Plate Tectonics
c)
Natural Selection
d)
Gravity
27.
Which medium does sound travel the fastest?
a)
Solid
b)
Liquid
c)
Gas
d)
Vacuum
28.
How does energy transfer from your computer?
a)
Electrical energy is converted to thermal energy.
b)
Kinetic energy is converted to thermal energy.
c)
Sound energy is converted to thermal energy.
d)
Mechanical energy is converted to thermal energy.
29.
What happens to energy?
a)
It is destroyed
b)
It is converted into knew types of energy like sound and heat
c)
It gets used up
d)
It stays contant
30.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
31.
A tapeworm and a cat have this type of relationship.
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
32.
Red-billed oxpeckers are birds that often feed on parasites that infest impala. This is an example of _______.
a)
commensalism
b)
mutualism
c)
neutralism
d)
competition
33.
In mitosis, replication occurs before the cell divides. What is the purpose of replication?
a)
to provide each new cell with an exact duplicate of the original DNA
b)
to transfer half of the traits of the parent cell to each new daughter cell
c)
to remove defective base pairs from the DNA before the parent cell divides
d)
to divide the parent cell’s genes equally between the two new daughter cells
34.
Which of these geologic areas is where rock is recycled by one tectonic plate sliding underneath another tectonic plate?
a)
a rift valley
b)
a strike-slip fault
c)
a subduction zone
d)
a divergent boundary
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