WorksheetsReplication,Repetition, Variables,Types of experiments.
Total questions: 52
Worksheet time: 53mins
Name
Class
Date
1.
What is a dependent variable?
a)
A variable being tested in an experiment.
b)
A variable that changes depending on another variable.
c)
A variable that is kept the same in an experiment.
2.
What is a controlled variable?
a)
A variable being tested in an experiment.
b)
A variable that changes depending on another variable.
c)
A variable that is kept the same in an experiment.
3.
What is an independent variable?
a)
A variable being tested in an experiment.
b)
A variable that changes depending on another variable.
c)
A variable that is kept the same in an experiment.
4.
How many independent variables should be in an experiment?
a)
One
b)
Unlimited
5.
The scientific method is only used in science class to conduct experiments.
a)
False.
b)
True.
6.
For every experiments how many trails or repetitions usually scientist /we should do
a)
3 to 5
b)
no trials required
c)
1 trial
7.
More trails or repetitions of an experiment will make the results or conclusions more .........................
a)
Accurate
b)
False
c)
Experimental
8.
Having an experiment repeated by others is called ?
a)
Repetition
b)
Replication
c)
Experiment
9.
During replications others have to follow the same procedures to get the same output or results
a)
True
b)
False
10.
Scientists frequently repeat the experiments of others scientists. Why is this important in science?
a)
Scientists often ask each other for help in performing experiments.
b)
Replication of experiments helps to confirm and verify results.
c)
Scientists frequently perform other scientists’ experiments in order to practice their technique.
d)
Repeating experiments is an effective way to make sure a laboratory is in optimal condition.
11.
When a another scientist does someone's experiment to see if the results are valid?
a)
repetition
b)
replication
c)
experimental method
d)
controlled variable
12.
Josue goes to Silver River each week for 4 weeks and collects 5 samples of water to test the pH.
a)
repetition
b)
replication
13.
An environmental group contacts Nina to get her procedures so that they can check her results.
a)
repetition
b)
replication
14.
There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?
a)
quantitative
b)
qualitative
15.
There are two types of data. Which type of data involves descriptions that cannot be counted or measured?
a)
qualitative
b)
quantitative
16.
In an experiment, the factor being tested or changed on purpose is called the ___.
a)
independent variable
b)
dependent variable
c)
constant
d)
experimental error
17.
Experiment: How does watching TV during studying affect a student’s test grades?
The students grades are the ___________ variable.
The students grades are the ___________ variable.
a)
independent
b)
dependent
18.
The one variable in an experiment that is purposely changed by the scientist is the________________.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
19.
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
20.
Does changing the scent of a brand of dog food affect how much the dog eats?
Which variable is the part in red?
a)
independent
b)
dependent
21.
Which is the BEST way to identify a qualitative observation?
a)
Look for words, pictures or diagrams
b)
Look for words such as see, hear, touch, smell, and taste.
c)
Look for units such as meters or liters.
d)
Look for number words such as more than, fewer, and none.
22.
Which is NOT the way to identify a quantitative observation?
a)
Look for words that describe things.
b)
Look for words that have to do with measuring and units, like centimeters and inches.
c)
Look for something that was counted.
d)
Look for number words such as more than, fewer, and none.
23.
Which of these is a qualitative observation?
a)
The boy is 5 feet tall.
b)
There are six birds in the tree.
c)
The birds are tiny.
d)
There are more blue birds than black birds.
24.
What type of tool would you use to make a qualitative observation?
a)
telescope
b)
ruler
c)
thermometer
d)
rain guage
25.
Dr. Smith has been reading about another scientist’s research in a physics journal. He plans to do these experiments himself and see if he gets the same result.
a)
repetition
b)
replication
26.
Kevin 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 Ja'nay his specific amounts of ingredients and the steps of his procedure. He asked Ja'nay to try the experiment to see if she gets the same results.
a)
repetition
b)
replication
27.
Haylena baked chocolate chip cookies that wound up looking like muffins. She asked Lunelka to use the same directions and see if her cookies also look like muffins.
a)
repetition
b)
replication
28.
Ms. Spiers has taught Mini Bear to run a maze. She thinks that the hamster will go faster if she puts its favorite treat at the end. She has the hamster run the maze ten times with the favorite treat and ten times with a regular food pellet. She uses a stopwatch to measure how long it takes for the hamster to get to the reward.
a)
repetition
b)
replication
29.
Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.
a)
repetition
b)
replication
30.
Anthony was given a set of 5 metal cubes. He calculated the densities of each to determine the type of metal in each. The densities were really close to each other, so he asked his friend Robert to do the same experiment and see if he gets the same results.
a)
repetition
b)
replication
31.
What are the five steps of the scientific method in order from first to fifth?
a)
research, problem, hypothesis, project, experimentation, conclusion
b)
research, conclusion, problem, project experimentation, hypothesis
c)
conclusion, research, problem, experimentation, hypothesis
32.
What type of model would you use to answer: How fast does the wind blow where a bridge will be built?
a)
make repeated observations
b)
perform an experiment
c)
make a model
d)
draw conclusions
33.
What type of model would you use to answer: Which type of paint works best to keep a bridge from rusting?
a)
make repeated observations
b)
perform an experiment
c)
make a model
d)
draw conclusions
34.
an investigation in which all the conditions are controlled
a)
predict
b)
experiment
c)
procedure
d)
model
35.
any condition in an experiment that can be changed
a)
procedure
b)
conclusion
c)
hypothesis
d)
variable
36.
Types of models
a)
physical, emotional, diagrams
b)
computer simulated, physical, experiment
c)
two dimensional, physical, experiment
d)
physical, computer simulated, diagrams
37.
needed to understand systems that have many hidden parts, used when one cannot experiment with the real thing
a)
prediction
b)
experiment
c)
procedure
d)
model
38.
________ are ways scientists perform investigations.
a)
Scientific methods
b)
Models
c)
Investigations
d)
Experiments
39.
Information that you gather with your senses is called
a)
an opinion
b)
a question
c)
a belief
d)
an observation
40.
The higher the temperature of the air in the oven, the faster a cake will bake.
What is the independent variable?
What is the independent variable?
a)
Time to bake a cake
b)
Type of cake
c)
Place in the oven
d)
Temperature of the oven
41.
A study was done to find if different tire treads affect the braking distance of a car.
What is the independent variable (what is changed)?
What is the independent variable (what is changed)?
a)
Tire tread
b)
Car
c)
Braking distance
d)
Duck sauce
42.
Lemon trees receiving the most water produced the most lemons.
What is the dependent variable (what is measured)?
What is the dependent variable (what is measured)?
a)
Amount of lemons
b)
Salt or fresh water
c)
Amount of water
d)
Type of citrus
43.
The time it takes to run a kilometre in a sweet ParkRun depends on the person’s running speed.
What is the dependent variable?
What is the dependent variable?
a)
Type of race
b)
Time to run a KM
c)
Persons running speed
d)
Location of ParkRun
44.
Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators.
The independent and dependent variables are? (in correct order)
The independent and dependent variables are? (in correct order)
a)
Type of problems, use of calculator
b)
Use of calculator, speed of completion
c)
Group, speed of completion
d)
Speed of completion, intelligence of student
45.
Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
The independent and dependent variables are? (in correct order)
The independent and dependent variables are? (in correct order)
a)
Size of the puzzle, difficulty of the puzzle
b)
Gender of students, age of students
c)
Age of the students, puzzle assembly time
d)
Puzzle assembly time, age of the students
46.
One tank of gold fish is fed the normal amount of food once a day. A second tank is fed twice a day. A third tank is fed four times a day during a six week study. The fish’s weight is recorded daily.
What should you keep the same?
What should you keep the same?
a)
Amount of food
b)
Size of the tank
c)
The weight of the fish at the end
d)
Experimenter's hair colour
47.
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
48.
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, what are the controlled variables?
a)
Type of plant, amount of music, and sunlight
b)
Water, apple juice, milk
c)
Plant growth
49.
Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
50.
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 genre of the book is
a)
the independent variable
b)
the dependent variable
c)
a constant variable
d)
a waste of money
51.
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
52.
Mr. Bayliss 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 controlled?
a)
Type of Shampoo
b)
Softness of Mr. Bayliss' beard
c)
Amount of Shampoo
d)
He doesn't need any constant variables
100 %
