Scientific method practice test

In a controlled experiment, the variable that is changed to test the hypothesis is called the –

• Controlled Variable

• Responsive Variable

• Dependent Variable

• Independent Variable

Which of these contains steps in the right order?

• Ask a question, form a hypothesis, research, plan and conduct an investigation, draw conclusions, report and share results, make a conclusion

• Form a hypothesis, ask a question, research, plan and conduct an investigation, draw conclusions, report and share results

• Observe and ask questions, form a hypothesis, plan and conduct an investigation, draw conclusions, report and share results

• Form a hypothesis, ask a question, research, report and share results, plan and conduct an investigation, draw conclusions

Some researchers are developing a new fertilizer designed to improve the growth of plants in hot, dry climates. The fertilizer was applied to one hundred desert plants in a greenhouse. The average daytime temperature in the greenhouse was 90°F, and the humidity levels were low. Which is best for the researchers to do next?

• A compare plants that received fertilizer to similar plants that received none

• B begin selling the fertilizer to gardeners living in hot, dry climates

• C change the conditions in the greenhouse and retest the fertilizer

• D test the fertilizer on plants that are adapted to cooler climates

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which best describes the purpose of a controlled experiment?

to prevent an undesired change in a variable

• to make sure the results of the experiment support the hypothesis

• to prevent a dangerous condition resulting from a reaction

• to examine whether one variable causes a change in another

• to prevent an undesired change in a variable

A company wants to sell more sports drinks so they decide to add more sugar.  For Group A they give them gatorade with an added teaspoon of sugar. For Group B they give them plain gatorade without adding sugar. Which Group is the CONTROL GROUP?

• Group A
• Group B
• The Gatorade
• The Company

Tags

NGSS.3-5-ETS1-3

How can you create a 'fair test'?

• By changing one factor and keeping all the other conditions constant

• By changing some variables but keeping one constant

• But repeating the experiment more than 10 times

• By allowing each scientist to record the results separately

Tags

NGSS.MS-PS2-2

Ryan wants to test which cleats enable him to run the fastest. Which question is the best scientific question?

• "Which cleats will help me run faster?"

• "Which brand of cleats will enable Ryan to run the fastest time in 100 meters?"

• "Will cleats are the best for running speed??"

• "Which brand of cleats helps Ryan run better?"

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

What was the dependent variable in this test?

• Soil type

• Plant mass

• Tomato seeds

• Pot B

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What was the independent variable in this test?

• Soil type

• Plant growth

• Amount of light

• The three pots

Tags

NGSS.MS-LS1-5

Hypothesis: The addition of a fertilizer to soil will increase plant growth.

Which of these experimental designs would best test this hypothesis?

• a

• b

• c

• d

Tags

NGSS.MS-LS1-5