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Quarter 1 Review

Total questions: 90

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

What are the constant variables?

a)

what we are changing or testing

b)

what we are observing or measuring

c)

what we keep the same to make the experiment fair

2.

You are testing how the amount you water a plant affects its growth. What would be the INDEPENDENT VARIABLE in this experiment.

a)

They type of pot you put the plants in.

b)

The amount you water each plant.

c)

The amount of sunlight the plants get.

d)

The amount the plant grows.

3.

What is the DEPENDENT variable (effect that is measured) in this experiment?

"Do tall people jump further than short people?"

a)

height of the person

b)

weight of the person

c)

how fast the person runs

d)

how far the person jumps

4.

The variable that is being tested, counted, or measured and how it reacts to the independent variable is known as:

a)

Independent Variable

b)

Controlled Variable

c)

Dependent Variable

5.

How many independent variables are allowed to be changed in an experiment?

a)

1

b)

2

c)

as many as you want

d)

0

6.
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
7.

What two words should be in your hypothesis?

a)

I think

b)

If ...then...

c)

It will

d)

No idea

8.

When is a hypothesis written?

a)

before you decide on a question

b)

after the experiment

c)

before the experiment

d)

after the conclusion

9.

The independent variable is

a)

the part the scientist measures

b)

the part the scientist changes or is testing

c)

a letter

10.

Which hypothesis is correctly written?

a)

I think I will do well on my test today, because I ate a good breakfast.

b)

If I eat a good breakfast, then I will do well on my test today.

c)

If I eat a good breakfast, then I will earn a passing grade on my test today.

d)

If I do well on my test today, I get to out to eat for breakfast.

11.

When we write a conclusion, we state

a)

that our hypothesis was correct or incorrect.

b)

that our hypothesis was proven or disproven.

c)

that out hypothesis was a good guess or a poor guess.

12.

Which statement is necessary in order for a scientific investigation to be valid?

a)

The investigation must be able to be repeated by others.

b)

The investigation must produce data that can be graphed.

c)

The investigation must follow all the steps of the scientific method.

d)

The investigation must have a conclusion that matches the prediction.

13.

Marvin predicts that if marigold flowers are planted around a group of tomato plants, then fewer insects will eat the tomatoes. Which of the following observations would best support Marvin's prediction?

a)

A count of 20 insects before marigolds are planted and 20 insects after marigolds are planted.

b)

A count of 20 insects before marigolds are planted and 12 insects after marigolds are planted.

c)

A count of 10 tomato plants before marigolds are planted and 5 tomato plants after marigolds are planted.

d)

A count of 10 tomato plants before marigolds are planted and 15 tomato plants after marigolds are planted.

14.

Jorge and Nancy conducted an experiment together. They caught moths that were attracted to either white light or yellow light and recorded the data. Their results are shown in the graph below


Which of the following conclusions is valid based on the graph?

a)

captured moths prefer yellow light

b)

only white moths are attracted to white light

c)

the number of moths captured per day using white light decreased each day

d)

the number of moths captured per day using yellow light decreased after day 5

15.

Repetition is when one scientist

a)

copies another scientist's experiment.

b)

bumps into another scientists.

c)

repeats their own experiment several times.

d)

clones a T. rex.

16.

Replication is when one scientist

a)

copies another scientist's experiment.

b)

laughs at another scientist's experiment.

c)

repeats their own experiment several times.

d)

clones another scientist.

17.

Repetition and Replication both involve doing

a)

weird experiments

b)

different experiments

c)

the same experiment

d)

Rick rolling

18.

Nicki Minaj goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH. What is this an example of?

a)

Repetition

b)

Replication

c)

Cleopatra

19.

An environmental group contacts Lil' Kim to get her procedures for dyeing hair pink using elephant earwax so that they can check her results. This is an example of what?

a)

Repetition

b)

Replication

20.

Wiz Khalifa was mixing a batch of glue and borax solution to make silly putty and discovered a new substance that glows in the dark. He gave Cardi B his specific amounts of ingredients and the steps of his procedure. He asked Cardi B to try the experiment to see if she gets the same results. This is an example of what?

a)

repetition

b)

replication

c)

Wiz's teardrop tattoo

21.

Post Malone has taught his pet rat to run a maze. He thinks that the rat will go faster if he puts its favorite treat at the end. He has the rat run the maze ten times with the favorite treat and ten times with a regular food pellet. He uses a stopwatch to measure how long it takes for the rat to get to the reward. This is an example of what?

a)

repetition

b)

replication

c)

Post's face tattoos

22.
During which interval is the object not moving?
a)
B to C
b)
C to D
c)
D to E
d)
only at point A
23.
During which interval is the object speeding up?
a)
A to B
b)
B to C
c)
D to E
d)
E to F
24.
During which interval is the object slowing down?
a)
A to B
b)
D to E
c)
E to F
d)
G to H
25.
Acceleration occurs when an object changes its speed or ______.
a)
direction
b)
force
c)
inertia
d)
mass
26.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
27.
Which runner won the race?
a)
Albert
b)
Bob
c)
Charlie
28.

What has to be true about an object for it to have kinetic energy?

a)

it must be moving

b)

it must be elevated

c)

it must be experiencing a net force

d)

it must be accelerating

29.

Does your desk have kinetic energy right now? Explain and justify your answer.

a)

yes because it is sliding across the room right now

b)

no because it is not moving

c)

yes because it has someone sitting in it

d)

no because it is here on earth

30.
What energy do you produce riding your bike? __________
a)
Sound Energy
b)
Mechanical Energy
c)
Light Energy
d)
Electrical Energy
31.
What is potential energy?
a)
the energy an object has due to its position or condition
b)
the energy an object has due to its motions
c)
the energy an object has due to its chemical composition
d)
theh energy an object has due to its atomic structure
32.
What are the two types of Mechanical Energy? (ME)
a)
Kinetic and Potential Energy
b)
Kinetic and Nuclear Energy
c)
Potential and Chemical Energy
d)
Thermal and Kinetic Energy
33.
At which point(s) on the roller coaster is the gravitational potential energy at its maximum?
a)
A
b)
B
c)
C
d)
D
34.
What does the Law of Conservation of Energy state?
a)
Energy cannot be created or destroyed
b)
Nothing can exchange energy
c)
Energy will increase over time.
d)
Energy will decrease over time.
35.
Is energy always conserved?
a)
Always
b)
Often
c)
Never
d)
Sometimes
36.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
37.
A ____________ is a push or a pull on an object.
a)
chemical
b)
force
c)
magnet
d)
gravity
38.
This force holds us to earth’s surface.
a)
friction
b)
mass
c)
gravity
d)
tension
39.
At which location would your mass be the greatest?
a)
Earth
b)
Moon
c)
Jupiter
d)
Mass Stays the Same Everywhere
40.
Gravity affects which of the following?
a)
Mass
b)
Weight
c)
Density
d)
Mass and Weight
41.
What force keeps the moon in orbit around the Earth?
a)
Weight
b)
Mass
c)
Gravity
d)
Magnetism
42.
On which surface would friction be the greatest?
a)
carpet
b)
ice
c)
snow
d)
satin
43.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
44.
What is the net force?
a)
4.2 N left
b)
4.2 N right
c)
2.2 N left
d)
2.2 N right
45.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
46.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
47.
What is the net force?
a)
3 N left
b)
3 N right
c)
7 N left
d)
7 N right
48.
What is the net force?
a)
1.3 N left
b)
1.3 N right
c)
3.7 N left
d)
3.7 N right
49.
The graph shows how the speed of an object changed over time. During which segments of this graph were the forces acting on the object balanced?
a)
R only
b)
Q and S
c)
R and T
d)
R, S and T
50.
Energy can be created.
a)
True
b)
False
51.
Energy cannot be destroyed.
a)
True 
b)
False
52.
When something is dropped, what type of energy transfer takes place?
a)
Kinetic -> Potential
b)
Gravitational Potential -> Kinetic -> Sound
c)
Electrical -> Chemical
d)
Heat -> Nuclear
53.
Imagine dropping a basketball. When would it have the most gravitational potential energy?
a)
When it is closest to the ground
b)
When it is at the highest point
c)
When it is halfway down
d)
It has the same amount of gravitational PE at all points
54.
Food has _______ potential energy that our bodies transform into kinetic energy.
a)
Elastic
b)
Nuclear 
c)
Gravitational
d)
Chemical
55.

Speed -

a)

A measure that gives rate of change and position

b)

A measure that dissolves to one unit

c)

A measure of distance an object travels per unit of time.

d)

A measure of distance an object travels per unit of measurement.

56.

Speed formula

a)

S=S X T

b)

S=TX S

c)

S=D/T

d)

S=T/D

57.

Forces are measured with units called

a)

Meters

b)

Newtons

c)

Length

d)

Miller

58.

A force that changes an object’s motion, direction, or speed

a)

Balanced forces

b)

Force

c)

Unbalanced forces

d)

All of the above

59.

The overall speed at which an object moves

a)

Average speed

b)

Speed

c)

Balanced

d)

Unbalanced

60.

Separate forces on an object that combined do not change the movement of the object.

a)

Balanced

b)

Unbalanced

c)

Force

d)

Speed

61.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Deacceleration
d)
Not moving
62.
Which runner won the race?
a)
A
b)
B
c)
C
d)
It was a tie
63.
Which runner had a head start?
a)
A
b)
B
c)
C
d)
None of them
64.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
65.
An experiment is set up with ten pots to test the effective of fertilizer on plant growth. 5 pots have fertilizer added to the soil, 5 pots do not have fertilizer added to the soil. Each pot has 1 spider plant and 5 cups of soil. The pots are watered once a week with 1/2 cup of water. What is something that would need to be true of the spider plants?
a)
The plants should not be the same size
b)
The plants should be the same species
c)
The plants cannot grow with fertlizer
d)
The plants are the independent variable
66.
Mrs. Cannaday wants to see which treat causes Voodoo to jump the highest. What is her independent variable?
a)
Voodoo
b)
Type of treat
c)
How high Voodoo jumps
d)
Mrs. Cannaday
67.

Mr. Conyers needs your help: He needs to find the constant variables for his experiment. He is trying to determine what shampoo leaves his beard the softest. Which variable would be a constant?

a)

Type of Shampoo

b)

Softness of Mr. Conyer's beard

c)

Amount of Shampoo

d)

He doesn't need any constant variables

68.

Ms. Forbes is attempting to test which parachute keeps her eggs from breaking when thrown from the roof of her house (this is what she does on the weekends). The type of eggs would be...

a)

the independent variable

b)

the dependent variable

c)

a constant variable

d)

a waste of money

69.

Ms. Forbes is attempting to test which parachute keeps her eggs from breaking when thrown from the roof of her house (this is what she does on the weekends). The type of parachute is....

a)

the independent variable

b)

the dependent variable

c)

a constant variable

d)

a waste of money

70.
The librarians want to know which students are checking out what types of books. They are testing "Which type of book do 7th graders check out most often: fiction or nonfiction?" The number of checked out books is
a)
the independent variable
b)
the dependent variable
c)
a constant variable
d)
a waste of money
71.
Every hypothesis begins with what word?
a)
Does
b)
If
c)
Which
d)
Then
72.

Does the brand of bubble gum affect the bubble size? Which hypothesis is INCORRECT?

a)

If the subject chews Bubblelicious, Big Red, Juicy Fruit, and Hubba Bubba, then the subject will blow the biggest bubble with Bubblelicious.

b)

If the subject chews Bubblelicious, Big Red, Juicy Fruit, and Hubba Bubba, then the subject will blow the smallest bubble with Big Red.

c)

If I chew Bubblelicious, Big Red, Juicy Fruit, and Hubba Bubba, I will blow the largest bubble with Juicy Fruit.

d)

If the subject chews Bubblelicious, Big Red, Juicy Fruit, and Hubba Bubba, then the subject will blow the smallest bubble with Hubba Bubba.

73.
A hypothesis is based on observations and research
a)
True
b)
False
74.
Scientific questions have to be...
a)
Measurable 
b)
Easy
c)
Interesting
75.

The variables you keep the same in the experiment are called

a)

independent variables

b)

dependent variables

c)

controlled variables

d)

hypothesis

76.

Which of the following is NOT a testable question?

a)

How do rockets work?

b)

Does fertilizer help plants grow bigger?

c)

Does heart rate increase with exercise?

d)

Does the freezing point of water change at different elevations?

77.

What is the best way to collect and record data?

a)

In a data table

b)

On post-it notes

c)

On scrap paper

d)

interpretive dance

78.

After the data is analyzed the hypothesis is stated as correct or incorrect in the __________

a)

conclusion

b)

experiment

c)

hypothesis

d)

table of contents

79.
process that test a hypothesis by collecting information under controlled conditions. 
a)
experiment
b)
examine
c)
justify
d)
observation
80.
constant
a)
process that test a hypothesis by collecting information under controlled conditions. 
b)
condition that is controlled so that it does not change during an experiment.
c)
is a logical interpretation based on prior knowledge. 
d)
process that test a hypothesis by collecting information under controlled conditions. 
81.
a)
Balanced
b)
Unbalanced
82.

The net force is...

a)

50 N

b)

0 N

c)

100 N

d)

2500 N

83.

Which of the following is an example of an unbalanced force?

a)
b)
c)
d)
84.

Which of the following is an example of a balanced force?

a)

An aeroplane taking off.

b)

Kicking a football.

c)

A car slowing down.

d)

A boy standing still.

85.

What is the unit for force?

a)

Joules (J)

b)

seconds (s)

c)

Newtons (N)

d)

meters (m)

86.

In the tug of war image, if both teams are pulling with the same amount of force, what will happen?

a)

The green team will win.

b)

The blue team will win.

c)

Both teams will not move.

87.
Are forces balanced or unbalanced when a marble rolls down a ramp?
a)
Balanced
b)
Unbalanced
88.
A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?
a)
The cart will speed up.
b)
The cart will slow down.
c)
The cart will move at a constant speed in a straight line.
d)
The cart will fly to never never land!
89.
Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
90.
Are forces balanced or unbalanced when skateboarding down a ramp?
a)
Balanced
b)
Unbalanced

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