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Year 10 Science Exam Revision

Total questions: 41

Worksheet time: 1hrs 25mins

Name
Class
Date
1.

Evolution is best defined as:

a)

the process which organisms die.

b)

the process which organisms change over time.

c)

the process which organisms that are extinct become revived.

d)

the process which non-living things fossilize.

2.

The solidified remain or imprint of a once living thing are called:

a)

Fossils

b)

Homologous Structures

c)

Vestigial Structures

d)

DNA

3.

What type of evidence is represented in the picture above:

a)

Fossils

b)

Vestigial Structures

c)

DNA

d)

Homologous Structures

4.

What type of evidence is shown in the image above?

a)

Fossils

b)

Vestigial structures

c)

Homologous Structures

d)

DNA

5.

What type of evidence is shown in this picture?

a)

Fossils

b)

Homologous Structures

c)

Vestigial Structures

d)

DNA

6.

What type of evidence are shown in the picture above?

a)

Fossils

b)

Embryology

c)

Homologous Structures

d)

Vestigial Structures

7.
The similarities of the bones in the diagram provide evidence that---
a)
The organisms shown lived in the same natural envionrment
b)
The organisms shown may have developed from a common ancestor
c)
The organisms shown have the same genetic diseases
d)
All vertebrate species have identical forelimbs
8.
The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?
a)
Fossil A and C are the same age
b)
Fossil B is older than fossil C
c)
Fossils A is older than fossil B
d)
Fossil D is older than fossil C
9.
What process is being shown in this image?
a)
Variation
b)
Natural Selection
c)
Selective Breeding
d)
Homeostasis
10.

Which scientist is known for his work that he did on the Galapagos Islands to develop his theory of natural selection?

a)

Gregor Mendel

b)

Charles Darwin

c)

Anton Van Leewenhoek

d)

Robert Brown

11.

Which of the following is true about the picture above?

a)

Camels are highly adapted to cold climates.

b)

There are no benefits to using a camel vs. a horse in the desert.

c)

Camels have directly evolved from whales.

d)

A camels long large intestine, long eyelashes and wide feet allow it to be very adapted to the desert.

12.

Which of the following is true regarding the evidence of evolution

a)

Vestigial structures are not real evidence of evolution.

b)

Homologous structures and fossils are the most dependable forms of evidence.

c)

Comparing DNA is the most definitive and accurate method to show evolutionary relationships.

d)

Embryology and Homologous structures do not support the theory of evolution.

13.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
14.
Which of these is NOT a sign that a chemical change has occurred? 
a)
A loss of transparency 
b)
An unexpected color change
c)
A temperature change
d)
The formation of a precipitate
15.
In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?
a)
Reactants
b)
Products
c)
Atoms
d)
Catalysts
16.
The Law of Conservation of Mass states
a)
that matter exists in all states and reacts the same
b)
that matter can only be changed into new substances by introducing a catalyst
c)
that matter exists in the same state throughout any chemical change
d)
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
17.
How many Al atoms are in this compound?         4Al2O3
a)
2
b)
8
c)
6
d)
4
18.
How many F atoms are in this compound?
6MgF2 
a)
2
b)
6
c)
8
d)
12
19.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
20.
An gel ice pack getting cold after you put it in the freezer for an hour.
a)
Chemical Change
b)
Physical Change
21.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
22.
___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
23.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
24.
An element plus additional element reacts to form one product is an example of which type of chemical reaction? 
a)
combustion
b)
decomposition 
c)
synthesis 
d)
single replacement
25.
Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because? 
a)
Magnesium is higher on the reactivity series then hydrogen
b)
magnesium is more reactive than hydrogen
c)
magnesium is able to break the bond between HCl and form MgCl2
d)
both b and c are correct
26.
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
a)
double replacement 
b)
decomposition 
c)
combustion 
d)
single replacement
27.
A compound is reacted and forms two new substances. What type of reaction is this? 
a)
combustion 
b)
synthesis 
c)
decomposition 
d)
single replacement 
28.
Balancing this reaction: ____ CH4 + ____ O2 ---> ____ CO2 + ____ H2O
a)
2,1,3,1
b)
1,2,1,2
c)
1,2,2,1
d)
2,1,1,2
29.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
30.
Balance this reaction: ____ C5H14 + ____ O2 ----> ____ CO2 + ____ H2O
a)
1,8,5,7
b)
2,12,5,14
c)
3,27,15,24
d)
2,17,10,14
31.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
32.
Which is NOT a step in the scientific method?
a)
Make observation
b)
Form a theory
c)
Collect data
d)
Form a hypothesis
33.
This variable in an experiment is the one being changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
34.
What is a hypothesis?
a)
A hypothesis is the right answer to an experiment.
b)
A hypothesis is the wrong answer to an experiment.
c)
A hypothesis is an educated guess.
d)
I don't know.
35.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
36.
Dependent variable means
a)
the scientist controls what to test
b)
educated guess
c)
ask a question
d)
what is being measured
37.
If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?
a)
increase the amount of iron in your blood
b)
spinach you eat
38.
Will a construction paper air plane fly faster than an airplane made from notebook paper? Choose the best hypothesis.
a)
If I make a paper airplane from notebook paper, then it will fly faster than construction paper.
b)
Yes.
c)
No.
d)
I think the construction paper air plane will fly faster.
39.

A scientist investigates the effect of carbon dioxide on plant height. The scientist grows plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the independent variable in this experiment?

a)

the amount of carbon dioxide in each container

b)

the number of plants in each container

c)

the amount of water provided to the plants

d)

the height of each plant after a period of time

40.
Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?
a)
Type of gasoline
b)
which car the gas is put into
c)
how fast the car can drive
d)
how much gas is put into the car
41.
Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Where the experiment took place.

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