Unit 1 Study Practice

A factor that does not change in the experiment is called:

• Independent variable

• Dependent variable

• Constant

• Fact

Reliability is ________; validity is ________. Both ensure trustworthy results.

• consistency; accuracy

• accuracy; consistency

• speed; accuracy

• consistency; speed

What is an inference?

• A direct observation of an event

• A conclusion based on evidence and reasoning

• A prediction about future events

• A measurement of a physical quantity

List the steps of the scientific method

d

e

f

c

b

a

analyze data

record data

Ask a question

Form a hypothesis

draw a conclusion

Conduct experiment

Students wanted to know how plant growth would be affected when given different amounts of water. To setup the experiment, pea plants were potted in the same pots and given the same amount of sunlight. 2 plants received 1/2 a cup of water, 2 plants received 1 cup of water, and the last 2 plants received 2 cups of water daily.

• Constants

• the same pots and the amount of sunlight

• Independent Variable

• Plant growth

• Dependent Variable

• Amount of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In an experiment, a scientist is looking at how daily water affects bonsai growth. What are the following components of the experiment? Match the components with the correct vocabulary word.

• Constant

• Air quality in room where bonsai is

• Constant

• Bonsai growth

• Independent Variable

• Light given to bonsai

• Dependent Variable

• Daily water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which statement is an inference about this picture?

• The van is tan.
• The  van ran into KFC. 
• The driver was hungry. 
• Red and white are part of the KFC building. 

Your teacher has asked you to explain the difference between quantitative and qualitative observations. Which statement is correct?

• Quantitative observations use numbers, qualitative uses the senses.

• Quantitative observations use the senses, qualitative uses numbers.

• Quantitative observations use measurement, qualitative uses numbers.

• Quantitative observations use colors, qualitative uses the senses.

STATEMENT: In the picture, the people are whitewater rafting.

What is this statement considered in the Scientific Method?

• Making Observation

• Making Inferences

• Making Judgement

• Communicating with others

Which of the following is an example of a qualitative observation?

• The length is 10 meters

• The mass is 50 grams

• The liquid is blue

• The temperature is 25 degrees Celsius