Life Science Review 1.2: Question Preview (ID: 10861)

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The students will eat lunch on time today is an example of a(n)
a) observation
b) hypothesis
c) question
d) prediction

When using scientific methods, scientists
a) always go in the exact order of steps
b) always end with communicating results
c) can use all or some of the steps
d) can only use the steps once

Which of the following is not a scientific method?
a) make assumptions
b) form a hypothesis
c) analyze results
d) draw conclusions

The closeness of a measurement to its true value is
a) accuracy
b) precision
c) estimate
d) prediction

Controlled experiments test
a) Only 1 variable at a time
b) 2 variables at a time
c) Only the control group
d) Only the experimental group

Hypothesis: Water can dissolve more salt when it is hot. The amount of salt dissolved is the
a) independent or responding variable
b) independent or manipulated variable
c) dependent or responding variable
d) dependent or manipulated variable

Observations are not
a) diverse ways in which scientists study the natural world
b) information gathered with the five senses
c) accurate
d) measured, described, and recorded

A conclusion
a) is a summary of results
b) is a statement of how variables are measured
c) shows no effect from the independent variable
d) shows an effect from the independent variable only

4 students ran a race in the following times: 16 s, 20 s, 22 s, and 26 s. What was the average time?
a) 21 s
b) 20 s
c) 22 s
d) 23 s

What variable is plotted on the x-axis of a line graph?
a) dependent or responding variable
b) independent or responding variable
c) independent or manipulated variable
d) dependent or manipulated variable

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