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Scientific Thinking Skills Review For Final

Total questions: 124

Worksheet time: 4hrs 37mins

Name
Class
Date
1.

How does the amount of fertilizer affect the height of a plant? The independent variable is

a)

the height of the plant

b)

the amount of fertilizer

2.

How does the amount of fertilizer affect the height of a plant? The dependent variable is

a)

the height of the plant

b)

the amount of fertilizer

3.

Max is rolling a car down a ramp. Max thinks that cars roll faster on steeper ramps. What is Max's independent variable?

a)

If the ramp is steeper, then the car will roll faster.

b)

the steepness of the ramp

c)

the speed of the car

d)

the same car, the same surface, the same wind, etc..

4.

Max is rolling a car down a ramp. Max thinks that cars roll faster on steeper ramps. What is Max's dependent variable?

a)

If the ramp is steeper, then the car will roll faster.

b)

the steepness of the ramp

c)

the speed of the car

d)

the same car, the same surface, the same wind, etc..

5.

Max is rolling a car down a ramp. Max thinks that cars roll faster on steeper ramps. What is Max's hypothesis?

a)

If the ramp is steeper, then the car will roll faster.

b)

the steepness of the ramp

c)

the speed of the car

d)

the same car, the same surface, the same wind, etc..

6.

Max is rolling a car down a ramp. Max thinks that cars roll faster on steeper ramps. What could be a control?

a)

If the ramp is steeper, then the car will roll faster.

b)

the steepness of the ramp

c)

the speed of the car

d)

the same car, the same surface, the same wind, etc..

7.

Julia kicks a ball many times while kicking with different strengths to see how far Julia can kick the ball. What could Julia use a control?

a)

the same ball

b)

how hard Julia kicks

c)

how far the ball goes

d)

If Julia kicks harder, then the ball goes further.

8.

Julia kicks a ball many times while kicking with different strengths to see how far Julia can kick the ball. What is Julia's independent variable?

a)

the same ball

b)

how hard Julia kicks

c)

how far the ball goes

d)

If Julia kicks harder, then the ball goes further.

9.

Julia kicks a ball many times while kicking with different strengths to see how far Julia can kick the ball. What is Julia's dependent variable?

a)

the same ball

b)

how hard Julia kicks

c)

how far the ball goes

d)

If Julia kicks harder, then the ball goes further.

10.

Julia kicks a ball many times while kicking with different strengths to see how far Julia can kick the ball. What is Julia's hypothesis?

a)

the same ball

b)

how hard Julia kicks

c)

how far the ball goes

d)

If Julia kicks harder, then the ball goes further.

11.

Zemo has a hot air balloon. Zemo experiments with increasing the air temperature in the balloon to see how it affects the balloons altitude. What is a contol Zemo should use?

a)

If the air temperature increases, then the balloon will rise.

b)

the altitude of the balloon

c)

the air temperature inside the ballon

d)

the same balloon

12.

Zemo has a hot air balloon. Zemo experiments with increasing the air temperature in the balloon to see how it affects the balloons altitude. What is Zemo's hypothesis?

a)

If the air temperature increases, then the balloon will rise because the molecules will spread out.

b)

the altitude of the balloon

c)

the air temperature inside the ballon

d)

the same balloon

13.

Zemo has a hot air balloon. Zemo experiments with increasing the air temperature in the balloon to see how it affects the balloons altitude. What is Zemo's independent variable?

a)

If the air temperature increases, then the balloon will rise.

b)

the altitude of the balloon

c)

the air temperature inside the ballon

d)

the same balloon

14.

Zemo has a hot air balloon. Zemo experiments with increasing the air temperature in the balloon to see how it affects the balloons altitude. What is Zemo's dependent variable?

a)

If the air temperature increases, then the balloon will rise.

b)

the altitude of the balloon

c)

the air temperature inside the ballon

d)

the same balloon

15.

What three words should be in your hypothesis?

a)

I think

b)

My guess

c)

If... then... because

d)

No idea

16.

What a hypothesis?

a)

an explanation about what you observed

b)

using your 5 senses to gather data

c)

the thing changed on purpose in the experiment

d)

an educated guess about what will happen in the experiment.

17.

Which hypothesis is written corrctly?

a)

If you sleep 8 hours then will help you do better in class because you need a good night sleep.

b)

If the amount of sleep is changed then it will affect how you do in class.

c)

I think the amount of sleep will affect how you do in class.

18.

When is a hypothesis written?

a)

before you decide on a question

b)

after the experiment

c)

after the conclusion

d)

before the experiment

19.

A hypothesis is never wrong.

a)

True

b)

False

20.
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
21.
What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?
a)
the paper used
b)
the type of paper airplane
c)
the distance of each plane's flight
d)
how hard the plane is thrown
22.
Penelope wanted to see if the temperature of the oven made cookies softer or harder. What is the dependent variable.
a)
Hardness of cookie
b)
Type of oven
c)
Temperature of oven
23.
How does watching TV during studying affect a student’s test grades?
a)
independent
b)
dependent
24.
Do roses grow more in height in partial or direct sunlight?
a)
independent
b)
dependent
25.
The price of a pizza and the number of toppings added.
a)
Positive correlation
b)
Negative correlation
26.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
27.
The amount of coffee you drink and how many hours you stay up.
a)
Positive correlation
b)
Negative correlation
28.
How old a man is and how much hair he has.
a)
Positive correlation
b)
Negative correlation
29.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
30.
The temperature outside and the number of layers of clothes you need to stay warm.
a)
Positive correlation
b)
Negative correlation
31.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
32.
The number of hours spent in the sun and the severity of your sunburn
a)
Positive correlation
b)
Negative correlation
33.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
34.
How much you eat and how hungry you will be.
a)
Positive correlation
b)
Negative correlation
35.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
36.
The number of hours you spend studying the the grade you receive on a test.
a)
Positive correlation
b)
Negative correlation
37.
The length of your hair and how much shampoo you will need.
a)
Positive correlation
b)
Negative correlation
38.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
39.
The temperature of a bowl of soup and the length of time it sits.
a)
Positive correlation
b)
Negative correlation 
40.
The amount of time you spend in the bath and how wrinkly your skin gets.
a)
Positive correlation
b)
Negative correlation
41.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
42.
The height of a candle and the amount of time it stays lit.
a)
Positive correlation
b)
Negative correlation
43.
a)
Positive correlation
b)
Negative correlation
c)
No correlation
44.
The time spent running on a treadmill and the number of calories you burn.
a)
Positive correlation
b)
Negative correlation
45.

What is CONSTANT VARIABLE?

a)

Variables that remain constant

b)

A variable that is changed in an investigation.

c)

A variable that is observed in an investigation.

46.

What is MANIPULATED VARIABLE?

a)

Variables that remain constant

b)

A variable that is changed in an investigation.

c)

A variable that is observed in an investigation.

47.

What is RESPONDING VARIABLE?

a)

Variables that remain constant

b)

A variable that is changed in an investigation.

c)

A variable that is observed in an investigation.

48.

This variable is the one thing that changed on purpose...

a)

responding variable

b)

constant variable

c)

manipulated variable

49.

What is the RESPONDING VARIABLE in this experiment?

"Does eating breakfast improve test scores?"

a)

eating breakfast or not

b)

the test score

c)

what time you get up in the morning

50.

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

a)

The amount the plant grows.

b)

The amount you water each plant.

c)

The amount of sunlight the plants get.

51.

A scientist is testing which flavor of ice cream melts the fastest. What would his manipulated variables be? (choose TWO)

a)

The flavor of ice cream

b)

the time it takes to melt

c)

the temperature in the room where the ice cream is

d)

the size of the scoop

52.

Siti is testing how the age of a seed affects how fast plants grow. Look at the picture to see if you can figure out what makes her experiment unfair.

a)

She used different types of seeds/plants.

b)

Seed age might not make a difference.

c)

She did not plant very many plants.

53.

What is the CONSTANT VARIABLE (same) in this picture?

a)

type of the plant

b)

weight of the plant

c)

price of the plant

54.

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

a)

Manipulated Variable

b)

Constant Variable

c)

Responding Variable

55.

These are the variables that should stay the same. They do not get any changes in order to make for a fair test.

a)

Responding Variables

b)

Constant variables

c)

Manipulated Variables

56.

What is the manipulated variable in the picture?

a)

presence of sunlight

b)

girl and boy

c)

price of plant

57.

A student wants to test the hypothesis of "If salt is added to water then the boiling point of water will decrease (go down)." What is the manipulated variable?

a)

Whether salt is added or not

b)

Boiling Point

c)

Amount of water

58.

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

a)

1

b)

2

c)

as many as you want

d)

0

59.

What is the manipulated variable in this picture?

a)

The amount of water

b)

The size of plant

60.

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

a)

$8 per pound

b)

$35 per pound

c)

$5 per pound

d)

$0.125 per pound

61.

Will spent $3.75 for 3 pounds of granola. What is his unit rate in dollars per pound?

a)

$.50 per pound

b)

$1.25 per pound

c)

$3 per pound

d)

$2.50 per pound

62.

A unit rate is a rate in which the unit in the denominator is:

a)

0

b)

3

c)

1

d)

2

63.

A cashier at the grocery store rung up 2 customers in 8 minutes. At this rate, how many customers can he ring up in 30 minutes?

a)

16 customers

b)

10.5 customers

c)

7.5 customers

d)

14 customers

64.

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?

a)

$4.95 per pizza

b)

$5.75 per pizza

c)

$7.25 per pizza

d)

$6.50 per pizza

65.

You're throwing a party, and you ordered 15 pizzas for your guests. Your total came to $97.50. What was your unit cost per pizza?

a)

$4.95 per pizza

b)

$5.75 per pizza

c)

$7.25 per pizza

d)

$6.50 per pizza

66.

You go to the grocery store to buy dog food. The store has three sizes available:


A 20-lb bag for $23.44

An 8-lb bag for $9.88

A 40-lb bag for $49.00


Which size bag has the lowest cost per pound rounded to the nearest cent?

a)

The 8-lb bag

b)

The 20-lb bag

c)

The 40-lb bag

d)

I have a cat

67.
a)
Taylor can write 6 words per minute
b)
Taylor can write 25 words per minute
c)
Taylor can write 50 words per minute
d)
Taylor can write 150 words per minute
68.
a)
Taylor can write 6 words per minute
b)
Taylor can write 25 words per minute
c)
Taylor can write 50 words per minute
d)
Taylor can write 150 words per minute
69.
The table shows the weight in pounds of objects on earth compared to objects on the moon.  If an object on earth weighs 42 lbs, what is its weight on the moon?
a)
7 lbs
b)
12 lbs
c)
84 lbs
d)
252 lbs
70.
Which statement below accurately represents the graph?
a)
$100 is earned for each hour worked
b)
$200 earned for every 2 hours worked
is the unit rate
c)
$500 is earned for every 8 hours worked
d)
$300 is earned after working 4 hours
71.
Does the table show a proportional relationship?
a)
Yes
b)
No
72.
This is a table with a proportional relationship between A and B.  Find the missing value of B. 
a)
33
b)
44
c)
32
d)
48
73.
What is the unit rate in this proportional relationship?
a)
60 miles/1 hour
b)
120 miles/ 2 hours
c)
1 mile/ 1 hour
74.
Does this graph represent a proportional relationship?  
a)
No, because it doesn't pass through the origin.
b)
Yes, because it doesn't pass through the origin.
c)
Yes, because it intersects the y axis.
d)
No, because it intersects the x axis.
75.
Which graph is proportional?
a)
A
b)
B
c)
C and D
d)
All of the graphs are proportional
76.
REVIEW QUESTION
Which best describes the graph represented in this table?
a)
 proportional
b)
non-proportional
77.
Is the graph proportional or non-proportional?
a)
Proportional
b)
Non-Proportional
78.
Which table shows a proportional relationship?
a)
A
b)
B
c)
C
d)
D
79.
Is this table proportional?
a)
Yes
b)
No
80.

Determine the Independent Variable in the statement below

Farah studied 2 hours for her summative, Layan studied 4 hours. Layan got better marks.

a)

Marks

b)

Summative Test

c)

Layan

d)

Studying hours

81.

Determine the dependent variable

Group (A) drinks coffee 3 times a day, Group (B) does not drink coffee.

Group (A) sleeps 3 hours at night. Group (B) sleeps 10 hours at night.

a)

Drink Coffee

b)

Does not drink Coffee

c)

hours of sleep

d)

Group A

82.

Determine the Controlled Variable

A kid was playing with 2 red toy cars, he slides one on a short slide at the park and another on a long slide. The second car reached the end faster.

a)

Short Slide

b)

The park

c)

Long Slide

d)

the cars

83.

The variable that We change on purpose is

a)

Controlled

b)

Dependent

c)

Independent

d)

Constant

84.

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

a)

0

b)

1

c)

2

d)

3

85.

A scientist is testing how fast different flavors of ice cream melts. What could be a controlled variable?

a)

Chocolate

Ice cream

b)

Vanilla Ice cream

c)

The size of the scoop 

d)

Place they are in

86.

A student wants to test the effects of type of exercise on heart rate.

 What is the dependent variable?

a)

amount of exercise

b)

heart rate

c)

type of exercise

d)

time of the day

87.

A hypothesis is

a)

a question

b)

a possible explanation or postulate

c)

using your senses to collect data

d)

measure using tools to collect data

88.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
89.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
90.
Jessie is concerned about how tired his classmates seem. He created a drink that he thinks will boost their energy. He recruits 100 classmates with a history of tiredness. He has 50 of them drink his new special energy drink. The other 50 drink a beverage that looks like the special energy drink, but is just water and food coloring. Both groups were told that they were getting the special drink that would boost energy. After 2 hours, 30 classmates in the first group reported having more energy and 8 classmates in the second group reported having more energy.
What is the independent variable?
a)
Amount of energy
b)
Type of Drink
c)
The food coloring
d)
There isn't one
91.
Jessie is concerned about how tired his classmates seem. He created a drink that he thinks will boost their energy. He recruits 100 classmates with a history of tiredness. He has 50 of them drink his new special energy drink. The other 50 drink a beverage that looks like the special energy drink, but is just water and food coloring. Both groups were told that they were getting the special drink that would boost energy. After 2 hours, 30 classmates in the first group reported having more energy and 8 classmates in the second group reported having more energy.
What is the dependent variable?
a)
Amount of energy
b)
100 classmates
c)
Type of Drink
d)
There is none
92.
What would the INDEPENDENT variable be in an experiment testing which types of paper airplane goes furthest?
a)
the paper used
b)
the type of paper airplane
c)
the distance of each plane's flight
d)
how hard the plane is thrown
93.
A custodian notices some dirty tables and wants to know what's the best cleaner.  He uses a new spray cleaner to remove the green slime left by students on half of his tables and water on half of his tables.  Identify the independent variable.
a)
type of cleaner
b)
the new cleaner
c)
the green slime
d)
the effect of the cleaner
94.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 
a)
experimental group
b)
control group
c)
data
d)
variables
95.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
96.
A comprehension test was given to students after they had studied textbook material either in silence or working together.
What is a possible control variable?
a)
Comprehension Test Results
b)
The thickness of the text book
c)
All students working in Silence
d)
Number of students working together and in Silence
97.
For Julie to make 16 muffins, she need 2 cups of flour. To make 32 muffins she needs 4 cups of flour.  What is the dependent variable? 
a)
number of muffins
b)
cups of flour
c)
16 muffins
d)
chocolate chips
98.
a)
A
b)
B
c)
C
d)
D
99.
Everything starts with an observation or a question
a)
True
b)
False
100.
How many variables do we want to be testing at one time?
a)
1
b)
2
c)
3
d)
4
101.

What does the independent variables' definition, and how many should there be?

a)

what the scientist thinks; 1

b)

what the scientist observes; 1

c)

what the scientist changes; 1

d)

none of the above

102.

Constants should be...

a)

different

b)

same

c)

kind of the same

d)

none of the above

103.

Controls don't

a)

receive experimental treatment

b)

keep things the same

c)

keep the experiment the same

d)

keep procedures the same

104.

Select ALL choices that are true regarding experiments.

a)

contains controls and variables

b)

test the hypothesis

c)

used to test your variables

d)

ensure experiments are valid

105.
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
a)
3
b)
1/10
c)
3/10
d)
30%
106.
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
a)
3/10
b)
3/9
c)
1/9
d)
1/3
107.

What is the probability of flipping a coin

3 times and getting 3 heads?

a)

1/8

b)

1/4

c)

1/2

d)

3/4

108.

The theoretical probability of rolling an even number on a dice.

a)

3/6

b)

1/2

c)

1/6

d)

5/6

109.

A farm has 5 brown cows and 10 white cows. A fence is open and two cows escape. What is the probability that it will be a brown cow, then a white cow?

a)

1/9

b)

2/9

c)

5/21

d)

10/21

110.

You pick a marble from this bag.

What is the probability you will choose either a black or white marble?

a)

3/5

b)

9/100

c)

1/10

d)

2/5

111.

In a drawer, there are 6 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace it, then pick out a 2nd sock. What is the probability that you will pick a brown, then black sock?

a)

1/11

b)

1/18

c)

1/36

d)

2/33

112.

You roll two die.

What is the probability you will roll a 4, then roll a number less than 3?

a)

1/36

b)

1/18

c)

1/9

d)

1/6

113.
A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?
a)
5/11
b)
5/6
c)
1/3
d)
5
114.

You spin the spinner. How many possible outcomes are there?

a)

4

b)

8

c)

1

d)

6

115.
Find the theoretical probability of landing on orange or red if you spin the spinner.
a)
0
b)
3/8
c)
2/8
d)
1/4
116.
In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 
a)
10/20
b)
1/2
c)
1/20
d)
20/20
117.
In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking a number divisible by 5. 
a)
4/20
b)
1/5
c)
5/20
d)
1/4
118.
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a 3.
a)
1/6
b)
3/6
c)
1
d)
1/2
119.
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a number greater than 3.
a)
4, 5, and 6
b)
3/6
c)
3
d)
1/2
120.
An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling an 8.
a)
0
b)
8/6
c)
4/3
d)
1/2
121.
Find the theoretical probability of NOT landing on yellow if you spin the spinner.
a)
1/8
b)
7/8
c)
1
d)
7
122.
What is Theoretical Probability?
a)
The ratio of favorable outcomes to the total number of possible outcomes
b)
The ratio of favorable outcomes to the total number of trials in an experiment
c)
In probability, a controlled, repeated process (such as repeatedly tossing a coin).
d)
A single possible result.
123.

What is the probability of flipping a coin, getting tails?

a)

1/2

b)

1/3

c)

1/4

d)

Never, Tails never fails.

124.

What is the probability of spinning an even number?

a)

30%

b)

33%

c)

50%

d)

67%

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