Bio1103 Lab Midterm

Which of the following is a good location to store chemicals if you have small children?

• on the pantry floor

• on top of the refrigerator

• in a high up cabinet

• all of the above are good places to store chemicals

Which of the following is forbidden while doing an experiment?

• eating

• talking on the phone

• showing the results to your children

• all of the above are forbidden activities

Which of the following is forbidden while performing an experiment?

• tasting chemicals

• heating metal utensils

• prepare a meal

• all of the above are forbidden

"A car, a truck, and a van are each given 5 gallons of gas. Each is driven until the tank runs empty. Total distance driven is measured."

In the experiment above, what is "each given 5 gallons of gas?"

• negative control

• control variable

• dependent variable

• independent variable

"Three plants are given 1, 2, or 3 ounces of water each. Plant height is measured after 1 week."

In the experiment above, what is the dependent variable?

• plant height

• amount of water

• 1 week

• none of the above

Tags

NGSS.MS-LS2-1

"Students are given 3, 6, or 9 hours of sleep. They are then given 20 minutes to take a test. Test scores are compared between the three groups."

In the experiment above, what is "test scores are compared?"

• control variable

• independent variable

• negative control

• dependent variable

"We will see whether detergent affects the growth of marigold plants."

What is wrong with the hypothesis above?

• it does not state the expected results of the experiment

• it cannot actually be tested

• it doesn't contain the independent and dependent variables

• there is nothing wrong with this hypothesis

Tags

NGSS.MS-LS1-5

"Dogs will choose Purina dog food over Kibbles n' Bits and Pedigree."

What is wrong with the hypothesis above?

• it doesn't contain the independent and dependent variables

• it cannot be tested

• it doesn't state the expected results

• nothing is wrong with this hypothesis

"Termites like blue ink trails better than black or red."

What is wrong with the hypothesis above?

• it doesn't state the expected results

• it cannot be tested

• it doesn't include the independent and dependent variables

• nothing is wrong with this hypothesis

What is a chemical that cannot dissolve in water called?

• hydrophobic

• polar

• carbohydrate

• none of the above