bb The Nature of Science

Reorder the following steps of the scientific method in the correct order.

• Conclusion

• Hypothesis

• Experiment

• Analysis

• Question

David pulled out four different CD’s to find out which type helped him to finish his homework the fastest. The first CD was rock, the second rap/hip-hop, the third classical, and the fourth was country. He chose a math assignment that required concentration. David used a stopwatch with an alarm to make sure that he only listened to each CD for 5 minutes. Each time the alarm went off, he recorded how many problems he was able to finish. Identify the:

Independent Variable (IV)

Dependent Variable (DV)

Constant Variables (list two)

How does phone use before bedtime affect sleep?

The amount of sleep you get would be the ​ (a)   ?

• dependent variable
• independent variable
• control
• constant

Label the sequence with the step of the scientific method that matches each picture.

a

b

c

d

e

Question

Hypothesis

Observation

Experiment

Conclusion

Albanee is performing a test in which she is trying to see if plants can grow when given fizzy drinks instead of water. She gives one plant water and a second identical plant the same amount of fizzy drink for two weeks.

What is the dependent variable?

• The plants' growth

• The amount of liquid

• The type of liquid

• Sally

Tags

NGSS.MS-LS1-5

A hypothesis is

• an educated guess

• fact or fictional information

• a statement supported by research

• a conclusion in a science experiment

The higher the temperature of the water, the faster the egg will boil. What is the dependent variable (the effect)

• The egg

• The temperature of water

• The type of water

• The time it takes the egg to boil

Students of different age groups were asked to put the same jigsaw puzzle together, they were timed to see how long it took. What is the independent variable?

• The age of the student

• The jigsaw puzzle

• The time to complete puzzle

• The music they listened to

In a well designed experiment, you should change how many variables?

• only one
• no more than two
• none at all
• as many as are needed

The summary at the end of an experiment that explains the results is

• materials

• conclusion

• hypothesis

• results