Why is it important to have constants in an experiment?

To ensure that only the independent variable affects the outcome

To make the experiment more interesting

To increase the number of variables

Which of the following is an example of a control in an experiment?

The group that receives a fake pill made of sugar and water

The group that receives the new medicine in a pill

The group with the highest dosage of the pill

If a line graph shows a steady increase in plant height over time, what can you infer about the relationship between time and plant height?

Plant height increases as time increases

Plant height decreases as time increases

Plant height stays the same as time increases

You are given a data table showing the number of seeds that sprouted under different temperatures. How would you determine which temperature is best for seed sprouting?

Choose the temperature with the highest number of seeds sprouted

Choose the temperature with the lowest number of seeds sprouted

Choose the temperature in the middle of the range

Choose the temperature with the fewest trials

A student wants to test if music affects how quickly plants grow. She plays music to one group of plants and not to another. What is the best way to ensure her results are valid?

Keep all other conditions the same except for the music

Use different types of plants for each group

Water one group more than the other

Use different amounts of soil for each group

Given a bar graph showing the average test scores of students who studied with and without background music, how would you determine if background music had an effect?

Compare the heights of the bars for each group

Count the number of bars on the graph

In a scientific study, why is it important to repeat the experiment several times?

To ensure the results are reliable and not due to chance

To make the experiment more fun

To get different answers each time

Examine the data shown in the graph below. What conclusion can be reached by the data shown in the graph?

June had the highest amount of photosynthetic activity.

June had the lowest amount of photosynthetic activity.

May, June, and July had the same amount of photosynthetic activity.

Examine the population curves for wolves and moose in the graph below. Which statement correctly describes the population relationship between the wolves and moose from 1968 to 1973?

As the moose population increased the wolf population increased.

As the moose population increased the wolf population decreased.

As the wolf population decreased the moose population decreased

As the wolf population increased, the moose population decreased.

Which of the following is an accurate observation that you could make based on what this graph shows.

The gummy bear changed the most in length from being submerged in vinegar

There was no change to the gummy bear after 24 hours of being submerged in water.

The gummy bear that has the greatest mass is the one that was submerged in vinegar.

Gummy bears change color when they are submerged in different liquids.

What is this graph showing you?

The worlds population has been growing and will continue to grow.

The worlds population is staying the same.

The worlds population is going down (decreasing).

The worlds population was growing but now is decreasing.

What would you use this map for?

to figure out the percentage rainfall has increased in the different regions of the US

to figure out how much rain has fallen in the US in different regions

to figure out how much rain has fallen in the midwest in inches

To figure out how much rainfall has decreased in the US

What conclusions can you draw from this graph?

The dear population went up quickly, then down, but then stayed the same.

The deer population went down over time.

The deer population went up over time.

There are less dear because of hunters

Look at the line graph. Which statement is consistent with the line graph?

The ability of air to hold moisture increases as temperature increases.

The ability of air to hold moisture decreases as temperature increases.

The ability of air to hold moisture decreases and then increases as temperature increases.

The ability of air to hold moisture stays the same regardless of temperature.

Scientific Process, Variables, and Data

Authored by Emily Amodei

Science

6th - 8th Grade

NGSS covered

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36 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which variable in an experiment is deliberately changed by the scientist to test its effect?

Dependent variable

Independent variable

Control variable

Constant

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for the variable that is measured or observed in an experiment?

Independent variable

Dependent variable

Control group

Constant

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the following is would not be constant in an experiment testing how sunlight affects plant height? Select all that apply.

Amount of sunlight each plant receives

Type plant used

Height of the plants at start

Number of days the experiment runs

Amount of water

Tags

NGSS.MS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a control group in a scientific experiment?

The group where the independent variable is changed

The group that receives no experimental treatment

The group with the most variables

The group with the highest results

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a scientist keeps the temperature the same for all test groups, what is the temperature considered?

Independent variable

Dependent variable

Constant

Control group

Tags

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a dependent variable?

It is changed by the experimenter

It is kept the same throughout the experiment

It is measured as the outcome of the experiment

It is not used in the experiment

Tags

NGSS.MS-PS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student wants to test how the amount of water affects plant growth. What is the independent variable?

Type of plant

Amount of water

Height of plant

Amount of sunlight

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS2-4

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Scientific Process, Variables, and Data

Which variable in an experiment is deliberately changed by the scientist to test its effect?

What is the term for the variable that is measured or observed in an experiment?

Which of the following is would not be constant in an experiment testing how sunlight affects plant height? Select all that apply.

What is a control group in a scientific experiment?

If a scientist keeps the temperature the same for all test groups, what is the temperature considered?

Which of the following best describes a dependent variable?

A student wants to test how the amount of water affects plant growth. What is the independent variable?

In an experiment testing the effect of different fertilizers on plant height, which is the dependent variable?

Why is it important to have constants in an experiment?

A graph shows the number of jumping jacks completed by students in 1 minute. What type of data is being represented?

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