WorksheetsFoundations Unit 1 Test
Total questions: 20
Worksheet time: 10mins
Which part of an experiment is the factor you change on purpose?
Dependent variable
Independent variable
Constant
Control
Which part of an experiment is measured as the outcome?
Independent variable
Dependent variable
Control
Hypothesis
Why are controls important in an experiment?
They keep the test fair
They change with the independent variable
They are optional
They make results random
A student measures the same liquid three times and records 45.1 mL, 45.0 mL, and 45.2 mL. These measurements are:
Inaccurate and not precise
Accurate and precise
Precise but not accurate
Accurate but not precise
What tool would be best for measuring the temperature of liquid in the Yeti Cup project?
Ruler
Thermometer
Balance
Stopwatch
If you forget to start the stopwatch at the beginning of your trial, what type of error is this?
Tool error
Human error
Random error
No error
Which type of error is harder to avoid?
Human error
Tool error
Both equally
Neither
What is the purpose of repeating an experiment several times?
To waste materials
To find different answers
To increase reliability
To make it harder
Why do scientists often graph their data?
It looks better
Graphs show patterns and trends
Graphs replace data tables
Graphs eliminate error
On a line graph, which axis usually represents time?
X-axis
Y-axis
Title
Legend
In the Yeti Cup project, which variable is the independent variable?
Starting temperature
Cup design (material/structure)
Time in hours
Final temperature
In the Yeti Cup project, which variable is the dependent variable?
Cup design
Starting volume
Temperature over time
Insulating material
Why is air a good insulator?
It conducts heat well
It blocks heat transfer because molecules are spread apart
It creates radiation
It lowers the temperature
Which of the following is a claim?
“My Cup is better because it stayed hotter than the Yeti.”
A table of temperatures
A graph of data
The stopwatch reading
Which of the following is evidence?
“The Yeti is the best cup.”
“At Hour 6, My Cup was 65 °C while the Yeti was 49.2 °C.”
“Vacuum insulation prevents conduction.”
“My Cup has three layers.”
What is experimental error?
A mistake in the hypothesis
A problem in measurement or procedure
A correct result
A type of graph
Which example shows accuracy?
A thermometer always reads 5 °C too low
All results are close to each other but far from the real value
Measurements are close to the actual value
Results are random
Why must all cups in the Yeti Cup experiment start at the same temperature and volume?
To save time
To use less water
To keep the test fair
To make the Yeti win
Which of these shows a full CER answer?
“The Yeti is the best.”
“My Cup is better.”
“My Cup is better because after 6 hours it is 15 °C warmer than the Yeti. The insulation trapped air and slowed heat loss.”
“Vacuum walls stop conduction.”
A student’s graph of Yeti data shows the line going upward instead of downward. What likely went wrong?
They plotted the data incorrectly
They measured wrong
The Yeti got hotter
The stopwatch was broken
