CFA 3.1 Test Review

Which of the following are examples of good TESTABLE question formats?

• How does changing the amount of sunlight affect how a plant will grow?

• What is the effect of sunlight on the height of a plant?

• What does sunlight do to plant height?

• If the amount of sunlight is change, will it affect the height of the plant?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What variable is it that "I" change or control in an experiment?

• experimental variable

• independent variable

• dependent variable

• control group

• constant variables

Tags

NGSS.MS-PS2-2

What variable is it that is measured or changed in an experiment?

• experimental variable

• independent variable

• dependent variable

• control group

• constant variables

Tags

NGSS.MS-PS2-2

What is the FIRST step of the scientific method?

• Collecting and organizing data

• Ask a testable question

• Planning an procedure for an experiment

• Defending your conclusions

Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. He gathered a 2 groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time. On one group of plants he used white light. On the second group he changed the light color to red. WHAT IS THE INDEPENDENT VARIABLE?

• the number of leaves

• the amount of time

• the color of the light

• the amount of water

• species of plants

Tags

NGSS.MS-LS1-5

Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. He gathered a 2 groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time. On one group of plants he used white light. On the second group he changed the light color to red. WHAT IS THE DEPENDENT VARIABLE?

• the number of leaves

• the amount of time

• the color of the light

• the amount of water

• species of plants

Tags

NGSS.MS-LS1-5

Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. He gathered a 2 groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time. On one group of plants he used white light. On the second group he changed the light color to red. WHAT ARE THE CONSTANTS in the experiment? (What do you want to keep the same if you repeat the experiment? NEVER PICK THE IV or DV!)

• the number of leaves

• amount of time

• keep the colors the same

• the amount of water

• species of plants

Tags

NGSS.MS-ETS1-1

Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of leaves it had. He gathered a 2 groups of the same species of plants, gave them the same amount of water, and did the test for the same amount of time. On one group of plants he used white light. On the second group he changed the light color to red. WHAT WOULD BE THE BEST CONTROL GROUP?

• plants exposed to the red light

• plants exposed to the white light

• plants exposed to natural light

Tags

NGSS.MS-LS1-5

If treated with the new medicine then the growth of bacteria in the infection will decrease. WHAT IS THE INDEPENDENT VARIABLE?

• the type of medicine

• Group with the infection given the OLD MEDICINE.

• Group with the infection given the NEW MEDICINE.

• the number of bacteria

• Group with the infection given NO MEDICINE.

If treated with the new medicine then the growth of bacteria in the infection will decrease. WHAT IS THE CONTROL GROUP?

• the type of medicine

• Group with the infection given the OLD MEDICINE.

• Group with the infection given the NEW MEDICINE.

• the number of bacteria

• Group with the infection given NO MEDICINE.

Tags

NGSS.MS-ETS1-1