Experimental Design Question Preview (ID: 49370)


Parts Of An Experiment; IV; DV; Control; Constants. TEACHERS: click here for quick copy question ID numbers.

1. You want to figure out which brand of microwave popcorn pops the most kernels, so you can get the most value for your money. What is the independent variable?
a) Number of kernels
b) Brand of popcorn
c) Type of microwave
d) Time of cooking

1. You want to figure out which brand of microwave popcorn pops the most kernels, so you can get the most value for your money. What would be a contstant used?
a) Same brand of popcorn
b) Different brand of popcorn
c) Same microwave used
d) Same price of popcorn

A student has data that shows his volcano erupts more quickly if he uses more vinegar. He completes three trials. What is the dependent variable?
a) Time for volcano to erupt
b) Temperature of vinegar
c) Amount of baking soda used
d) Amount of vinegar used

A student has data that shows his volcano erupts more quickly if he uses more vinegar. He completes three trials. What is the independent variable?
a) Time for eruption
b) Amount of vinegar used
c) Amount of baking soda
d) Temperature of vinegar

Which best describes the control group in an experiment?
a) The first trial or group tested
b) The last trial or group tested
c) The group with the most amount of constants
d)

Unit for measuring the amount of solids (baking soda)
a) meters (m)
b) mililiters (mL)
c) grams (g)
d)

Tool used to measure small, accurate amounts of liquids
a) beaker
b) test tube
c) graduated cylinder
d) electronic balance

Mr. Brewer thinks smaller wheels on his skateboard will help him skate faster. He times himself skating down the same hallway three times using different skateboards. What is the Independent Variable?
a) Three trials/runs
b) Different sized wheels on skateboard
c) Same hallway
d) How fast he skates down the hallway

Mr. Brewer thinks smaller wheels on his skateboard will help him skate faster. He times himself skating down the same hallway three times using different skateboards. What is the Dependent Variable?
a) How fast he skates down the hallway
b) Size of wheels
c) The hat he's wearing
d) Control group

Which word means that a volcano is currently not erupting, but could erupt again in the future?
a) active
b) dormant
c) volcanic
d) hot

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