Big Idea 1 & 2 Experimental Design Quiz

What is the main purpose of a control group in an experiment?

• To introduce new variables

• To ensure the experiment is valid

• To observe what happens without the change being tested

• To test the hypothesis

What is the test variable in Demetrius's experiment?

• The temperature of the greenhouse

• The amount of water

• The type of soil

• The added fertilizer

Tags

NGSS.MS-ETS1-1

What is the outcome variable in Demetrius's experiment?

• The number of beans produced

• The type of pots used

• The amount of water added

• The temperature and humidity

Tags

NGSS.MS-LS1-5

Which of the following is NOT a constant in Demetrius's experiment?

• The temperature and humidity

• The type of soil

• The amount of water

• The added fertilizer

Tags

NGSS.MS-LS2-1

NGSS.MS-ETS1-1

How often did Demetrius make observations of his plants?

• Every week

• Every month

• Every Monday

• Every day

What was Demetrius's prediction in his experiment?

• If I change the temperature in the greenhouse then the plants will grow more beans, because the plants will be in a better environment.

• If I add more water to my bean plants then the plants will grow more beans, because the plants will absorb more water.

• If I add fertilizer to my bean plants then the plants will grow more beans, because the plants will absorb more nutrients from the soil.

• If I use different pots then the plants will grow more beans, because the pots will provide better support.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What did Demetrius conclude after the first trial of his experiment?

• The fertilizer does not help his plants grow more beans.

• The type of soil affects the growth of beans.

• The fertilizer helps his plants grow more beans.

• The amount of water affects the growth of beans.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Why did Demetrius decide to carry out the experiment several more times?

• To test a different hypothesis

• To ensure his data are valid and reliable

• To change the type of soil

• To use up all the fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What did Demetrius hope other scientists would do with his published procedures and results?

• Ignore them

• Change the procedures

• Carry out the exact same investigation

• Use different materials

What was the outcome for Plant B in Week 6?

• 20 beans

• 8 beans

• 16 beans

• 10 beans