Josie was performing an experiment where she grew the same kind of tomatoes in the same soil and amount of water. She sat one in the sun and one in a closet for 14 days. What is the independent variable in Josie's experiment?
tomatoes
soil
sunlight
water
2. Multiple Choice
30 seconds
1 pt
Which of the following hypotheses is written correctly?
If a tennis ball is frozen, it won't bounce as high as one that is not frozen.
If I heat up a tennis ball it will bounce high.
If I freeze a tennis ball, then it will not bounce as high.
Frozen tennis balls will not bounce as high.
3. Multiple Choice
30 seconds
1 pt
In an experiment, the factor that we measure is called the
controlled variable
conclusion
independent variable
dependent variable
4. Multiple Choice
30 seconds
1 pt
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
the gender of the alligator
the male alligators
the temperature
the incubator
5. Multiple Choice
30 seconds
1 pt
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
the incubator
the temperature
the size of the baby alligators
the gender of the baby alligators
6. Multiple Choice
30 seconds
1 pt
In which step of the scientific method do we want to use graphs?
communicate results
asking questions
analyze data
make a hypothesis
7. Multiple Choice
30 seconds
1 pt
A scientist who wants to study the effects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B gets 5 mg. of fertilizer each day, and Plant C gets 10mg. of fertilizer each day. Which plant is the control group?
plant B
All of them
Plant C
Plant A
8. Multiple Choice
30 seconds
1 pt
A conclusion reached on the basis of evidence and reasoning is a/an ..
conclusion
theory
inference
hypothesis
9. Multiple Choice
30 seconds
1 pt
The best graph to use if I want to compare the price of six different cars would be a ...
Pie graph
Bar graph
Data table
Line graph
10. Multiple Choice
30 seconds
1 pt
A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the independent variable is...