# scientific inquiry test review 2020

```Scientific Inquiry and Lab Design
Test Review
Key Words
Observation
Constant
Dependent variable
scientific method
Inference
Quantitative
control
variable
independent variable
Qualitative
hypothesis
Concepts and Ideas
1. What is the scientific method? What is its purpose?
2. What is a hypothesis? What needs to be included in this part of the experiment?
3. What is the difference between observation and inference?
4. Indicate whether the following statements are observations of inferences:
a. The truck has leather heated seats so it must be expensive
b. The car is black and has tinted windows
c. The car has tinted windows so it is a police car
d. The container is filled to the 250 mL mark
e. The caterpillar did not eat the moth because it is not a carnivore
f. I can jump high in tennis shoes because they have rubber soles
g. The sun rose at 6:45 am this morning
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5. What is the difference between quantitative and qualitative observations?
6. Indicate whether the following observations are quantitative or qualitative:
a. The gummy worm increased by 2 inches.
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b. There were four dogs in the group.
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c. The dogs were small.
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d. The patient complained of aches and pains.
___________
e. The patient had a temperature 102 degrees.
___________
f. The chimp identified 12 pictures correctly.
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g. The parrots range from bright green to dark red.
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h. The balloon increased in size from 5 inches to 8 inches around. ___________
i. The birds were young.
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j. The rock sample consisted of 25 grams of quartz
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k. The rock sample was reddish brownish.
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l. The sample with the baking soda appeared bubbly
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m. The leaves on the first plant specimen appeared healthier.
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7. What is a variable?
8. What is a control? What is its purpose?
9. What is a constant? What is its purpose? Do experiments have more than one
constant?
10.What is the difference between an independent and dependent variable?
11.Read through the following examples and identify the independent, dependent, and any
constants:
a. Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is
measured in degrees Centigrade. Amount of sugar is measured in grams.
Independent Variable
Constants
Dependent Variable
b. Does fertilizer make a plant grow bigger? Amount of fertilizer measured in grams, quantities of
water measured in milliliters.
Independent
Constants
Dependent
c. How fast does a candle burn? Time measured in minutes. Height of candle measured in
centimeters at regular intervals of time (for example, every five minutes)
Independent
Constants
Dependent
12.Be able to read a graph and discuss any trends and identify the independent and