Grade 8 · Science · Unit 11 of 13
Measuring & Lab Safety
Tools, units, fair tests and safe habits
What your child practises
Children practise choosing the right tool and unit, reading measurements, planning fair tests and working safely with lab equipment.
Manitoba Curriculum learning outcome: SCI.8.C.2, SCI.8.C.3, SCI.8.C.4 · measuring with the right tools and units, scientific practices and using equipment safely
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Why do scientists repeat measurements?
- to check that results are reliable
- to waste time
- to make the numbers bigger
- because one is never enough for any task
to check that results are reliable
Hint: Repeated trials reduce error.
Question 2
In the same test, what is the variable she measures?
- the room colour
- the water temperature
- the cup size
- the time the sugar takes to dissolve
the time the sugar takes to dissolve
Hint: The measured variable depends on what you change.
Question 3
Which would be a safe way to carry a microscope?
- by its cord
- with two hands, one under the base
- by the eyepiece only
- with one hand by the stage
with two hands, one under the base
Hint: Handle equipment with care.
Question 4
Which tool measures temperature?
- ruler
- stopwatch
- pan balance
- thermometer
thermometer
Hint: Thermometers measure in degrees Celsius.
Question 5
If a chemical splashes on your skin, you should first…
- wait to see what happens
- wipe it on your shirt
- tell your teacher and rinse with water
- hide it
tell your teacher and rinse with water
Hint: Tell an adult right away.
Question 6
Which practice helps you analyze data?
- write only a title
- round everything to zero
- delete the numbers
- make a table and a graph
make a table and a graph
Hint: Organized data show patterns.