Stemscopes Exam Mathematics in Science 1 — Questions and Answers
Question 1: In a bar graph, what does the height of each bar represent?
- The category name
- The frequency or value of the data (Correct answer)
- The color of the data
- The number of axes
Correct answer: The frequency or value of the data
In a bar graph, the height (or length) of each bar corresponds to the value or frequency of that category.
Question 2: What is the mean of the data set: 4, 8, 6, 10, 2?
- 6 (Correct answer)
- 8
- 5
- 10
Correct answer: 6
The mean is calculated by adding all values (4+8+6+10+2=30) and dividing by the count (30÷5=6).
Question 3: Which metric unit is used to measure volume in science?
- Gram
- Meter
- Liter (Correct answer)
- Newton
Correct answer: Liter
The liter (L) and milliliter (mL) are the standard metric units used to measure liquid volume in science.
Question 4: On a line graph, what does a positive slope indicate?
- As x increases, y decreases
- As x increases, y also increases (Correct answer)
- The values are constant
- There is no relationship
Correct answer: As x increases, y also increases
A positive slope on a line graph means that as the x-variable increases, the y-variable also increases.
Question 5: What is a control variable in an experiment?
- The variable being tested
- The variable being measured
- A variable kept constant throughout (Correct answer)
- The outcome of the experiment
Correct answer: A variable kept constant throughout
Control variables are factors that are kept constant during an experiment so they do not affect the results.
Question 6: How many millimeters are in 1 meter?
- 10
- 100
- 1,000 (Correct answer)
- 10,000
Correct answer: 1,000
There are 1,000 millimeters in 1 meter, since the prefix 'milli-' means one-thousandth.
Stemscopes Exam Mathematics in Science 1
In a bar graph, what does the height of each bar represent?