Stemscopes Exam Mathematics in Science 2

Question 1

What type of graph is best for showing how a quantity changes over time?

Accepted Answer

Line graph

Answer

Line graphs are ideal for showing trends and changes in data over continuous intervals of time.

Question 2

In scientific notation, how is 6,500 written?

Accepted Answer

6.5 × 10³

Answer

6,500 in scientific notation is 6.5 × 10³ because the decimal is moved three places to the left.

Question 3

What is the dependent variable in an experiment?

Accepted Answer

The variable the scientist measures

Answer

The dependent variable is what is measured or observed in an experiment; it depends on the independent variable.

Question 4

What does a pie chart show?

Accepted Answer

Parts of a whole as percentages

Answer

A pie chart displays how different categories make up parts of a whole, typically expressed as percentages.

Question 5

What is the median of: 3, 7, 5, 9, 1?

Accepted Answer

5

Answer

Arranging values in order (1, 3, 5, 7, 9), the median is the middle value, which is 5.

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