Unit 1 Question Preview (ID: 34905)
Variables, Data.
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Which of the following is an example of quantitative data
a) the plant grew 9 cm
b) the cat meowed loudly
c) the solution turned blue
d) only males were affected
In the following hypothesis, identify the independent variable: If the temperature of water is higher, then the faster an egg will boil.
a) amount of water
b) temperature of water
c) time it takes an egg to boil
d) the size of the egg
A student wanted to find out which brand of paper towel absorbed the most water. What is the dependent variable?
a) the brand of paper towel
b) the amount of water absorbed
c) the size of the paper towel
d) the results of the experiment
A student wanted to find out which brand of paper towel absorbed the most water. What is a constant?
a) the brand of the paper towel
b) the amount of water absorbed
c) the size of the paper
d) the results of the experiment
An experimenter wanted to find the best spray to clean her bathtub. She used 409, scrubbing bubbles, and plain water. What is the control in her experiment?
a) type of cleaner
b) plain water
c) the effectiveness of the spray
d) the amount of time each cleaner was left on the bathtub
Which of the following describes a theory?
a) an educated guess
b) a statement of fact that describes an action
c) an explanation based on evidence
d) the one and only answer to a problem
Which of the following is an example of qualitative data?
a) the solution turned cloudy
b) 4 puppies were born
c) the ant crawled 4cm
d) the plant grew 9cm
Which of the following is a constant for the following experiment: A student wanted to test the effect of temperature on dry erase markers. He put one maker in the freezer and left one in room temp. for 45 minutes. He then wrote 1 word on the board.
a) the temperature
b) the effectiveness of the marker
c) the time the markers were left in certain temperatures
d) the results of the experiment
What is the information collected during an experiment called?
a) data
b) a theory
c) a law
d) a hypothesis
Which of the following is a hypothesis?
a) If I study everyday, then I will do well on the test
b) gravity pulls objects toward the earth at 9.8m/s^2
c) I hope the cowboys win
d) the litmus paper turned blue
Which of the following describes a law?
a) a statement fact that describes an action
b) an explanation based on evidence
c) an educated guess
d) the one and only answer to a problem
Which of the following is an inference?
a) the bird laid 3 eggs
b) the bird has black feathers
c) the bird wished she had 5 eggs
d) the bird had a beak and 2 eyes
How many independent variables should an experiment have?
a) 1
b) 2
c) 3
d) 4
Which scientific tool is used to measure the volume of a liquid?
a) Microscope
b) Telescope
c) Graduated Cylinder
d) Calculator
What is the primary difference between an experimental study and an observational study?
a) Experimental studies are expensive while observational studies are not
b) Experimental studies are conducted in labs while observational studies are not
c) Experimental studies involve manipulation of variables, whereas observational studies do not
d) Experimental studies produce reliable results, whereas observational studies do not
Question: Which of the following is an example of an observation?
a) Noticing that the leaves are turning orange and falling from the trees
b) Predicting that the sky will be blue tomorrow
c) Calculating the speed of a car
d) Believing it will rain because the sky is gray
Which type of graph would be most appropriate for showing the population of a species over time?
a) Pie chart
b) Bar graph
c) Line graph
d) Histogram
Which variable is plotted on the y-axis in a typical graph in biology?
a) Dependent variable
b) Independent variable
c) Controlled variable
d) Both A and B
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