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Q 1/20
Score 0
A student wants to test which brand of fertilizer makes sunflowers grow the tallest. What is the independent (test) variable?
30
The height of the sunflowers.
The amount of water given.
The type of fertilizer used.
The type of soil.
Q 2/20
Score 0
In the same sunflower experiment, what would be the dependent (outcome) variable?
30
The final height of the sunflowers.
The number of seeds planted.
The brand of fertilizer.
The amount of sunlight.
20 questions
Q.
A student wants to test which brand of fertilizer makes sunflowers grow the tallest. What is the independent (test) variable?
1
30 sec
Q.
In the same sunflower experiment, what would be the dependent (outcome) variable?
2
30 sec
Q.
Why must a scientist keep all variables except one constant in a controlled experiment?
3
30 sec
Q.
A student is doing an investigation on "which brand toothpaste whitens the best". He used "brand A", "brand B" and "just plain water". What would "just plain water" be considered?
4
30 sec
Q.
A student performs the same experiment three times to ensure her results are consistent. This is an example of:
5
30 sec
Q.
After a scientist publishes her results, a different lab in another state follows her procedures to see if they get the same results. This is an example of:
6
30 sec
Q.
Why is replication important in the scientific community?
7
30 sec
Q.
Which of the following best describes a scientific theory?
8
30 sec
Q.
How is a scientific law different from a scientific theory?
9
30 sec
Q.
Why might a long-standing scientific theory be modified or replaced?
10
30 sec
Q.
Which of the following is an example of a 'scientific investigation' that is NOT a 'controlled experiment'?
11
30 sec
Q.
What is a major limitation of a field investigation (like watching animals) compared to a lab experiment?
12
30 sec
Q.
A scientist uses a computer program to simulate how a hurricane might move. This is an example of:
13
30 sec
Q.
What is a benefit of using a model of the solar system in a classroom?
14
30 sec
Q.
If a data table shows that as the temperature of water increases, the amount of sugar that dissolves also increases, this is a:
15
30 sec
Q.
A scientist notices a strange mold growing on a petri dish and asks 'Why is this here?' This is an example of:
16
30 sec
Q.
Why is it important for scientists to remain 'objective' when recording data?
17
30 sec
Q.
Which tool would be most appropriate for measuring the volume of an irregular-sized rock?
18
30 sec
Q.
When should a scientist form a hypothesis?
19
30 sec
Q.
A student's graph shows a line that goes up and then levels off. What does the 'leveling off' represent?
