WorksheetsS& E Practice 1: Asking Questions & Defining Problems
Total questions: 7
Worksheet time: 2hrs 45mins
Name
Class
Date
1.
A good statement of the problem...
a)
Must be specific to the investigation
b)
Include both your independent and dependent variables
c)
Must be clear
d)
All of the above
2.
I am investigating which aluminum foil boat design would hold the most marbles before sinking.
a)
This is a poor statement of the problem.
b)
It is not clear what this person is investigating.
c)
The problem being investigated in clarified.
d)
None of the above
3.
A group of marine biologists are concerned about the population of rock crabs in the shores of Connecticut. Which of the following is a constraint that these scientists would encounter when trying to monitor the rock crabs population over time?
a)
Rock crabs are typically hard to find as they hide between rocks
b)
Rock crabs are not evenly distributed across the shores of Connecticut
c)
Rock crabs often migrate from one area to another
d)
All of the above
4.
In the above rock crab example, how would these marine biologists come to a solution to their original problem?
a)
If they had a hard time finding rock crabs, they would know for sure that their numbers were decreasing
b)
They could compare the estimates of the population of rock crabs from this year to prior years
c)
They could try to count the number of little fish on the coast, which is what the rock crab normally eats, and then estimate how many rock crabs there likely are from that
d)
d. They could test the salinity of the ocean water to see if it has changed over time
5.
The variable that is manipulated (or changed on purpose) is called the ____.
a)
Independent Variable
b)
Control
c)
Dependent Variable
d)
Constant
6.
In the following experiment, which variable is being manipulated (changed)?
Brands A, B, and C of hamburger meat are tested for the amount of fat in each. Each brand will be cooked for exactly 7 minutes. The same pan will be used for each test. The brands will each be drained for exactly 2 minutes by using a strainer and a measuring cup to determine the amount of fat that is drained.
Brands A, B, and C of hamburger meat are tested for the amount of fat in each. Each brand will be cooked for exactly 7 minutes. The same pan will be used for each test. The brands will each be drained for exactly 2 minutes by using a strainer and a measuring cup to determine the amount of fat that is drained.
a)
The cooking time
b)
The pan
c)
The brands being tested
d)
The straining of the meat after cooking
7.
In an activity you changed the background color to see how the bubble color would change. The background color served as the _____________, while the bubble color served as the_____________.
a)
independent variable, dependent variable.
b)
dependent variable, independent variable
c)
experimental variable, control variable.
d)
control variable, experimental variable.
100 %
