2.5 - Identifying Parts of an Experiment - Review Sheet

What are the steps of the scientific method?

• 1) Ask a question 2) Do background research 3) Construct a hypothesis 4) Test your hypothesis by doing an experiment 5) Analyze data and draw a conclusion 6) Communicate your results

• 1) Make a guess 2) Test your guess 3) Write a report 4) Share with friends

• 1) Observe 2) Hypothesize 3) Skip experiments 4) Publish immediately

• 1) Ask a question 2) Ignore research 3) Draw a conclusion 4) Communicate your results

Match the following terms to their definitions. Match each term to the correct definition.

• The variable that you change

• Independent variable

• The variable that changes because of the IV

• Control group

• The group that gets the IV

• Dependent variable

• The group that does not get the IV

• Experimental group

• The variables that stay the same for both groups

• Controlled variables

Tags

NGSS.HS-PS1-3

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. Group 1 received the normal amount of coffee grounds and Group 2 received two extra scoops of coffee grounds. Both groups used the same type of coffee and the same coffee maker. What is the Independent Variable (IV)?

• Amount of coffee grounds added

• Type of coffee maker used

• Temperature of the water

• Brand of coffee grounds

Tags

NGSS.HS-PS1-5

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. Group 1 received the normal amount of coffee grounds and Group 2 received two extra scoops of coffee grounds. Both groups used the same type of coffee and the same coffee maker. What is the Dependent Variable (DV)?

• Strength of the coffee

• Type of coffee maker used

• Temperature of the water

• Brand of coffee grounds

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. Group 1 received the normal amount of coffee grounds and Group 2 received two extra scoops of coffee grounds. Both groups used the same type of coffee and the same coffee maker. What is the Experimental Group?

• Group 2 (received two extra scoops of coffee grounds)

• Group 1 (received the normal amount of coffee grounds)

• Both groups used different coffee makers

• Both groups used different types of coffee

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. Group 1 received the normal amount of coffee grounds and Group 2 received two extra scoops of coffee grounds. Both groups used the same type of coffee and the same coffee maker.

• Group 1 (received the normal amount of coffee grounds)

• Group 2 (received two extra scoops of coffee grounds)

• Both groups used different coffee makers

• Group 1 used a different type of coffee

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. Group 1 received the normal amount of coffee grounds and Group 2 received two extra scoops of coffee grounds. Both groups used the same type of coffee and the same coffee maker. What are the Controlled Variable?

• Type of coffee and coffee maker used

• Amount of water used

• Temperature of the room

• Brand of coffee filters

Mr. Walsh wanted to see if the amount of coffee grounds added to the coffee maker would affect how strong the coffee is. What is the purpose of having a control group in this experiment?

• To change the type of coffee used

• To test a different coffee maker

• To increase the amount of water used

• To compare the results with the experimental group

Which variable should be kept constant to ensure a fair test in Mr. Walsh's coffee experiment?

• Amount of coffee grounds added

• Strength of the coffee

• Type of coffee used

• Number of scoops added

In Mr. Walsh's experiment, what would be an appropriate way to measure the dependent variable?

• By measuring the temperature of the water

• By counting the number of coffee filters used

• By weighing the coffee maker

• By testing the strength of the coffee using a taste test or a caffeine meter

Tags

NGSS.HS-PS1-3

NGSS.HS-PS3-4