Grade 9 · Science · Unit 16 of 17
Measuring & Lab Safety
Choose tools and units, and work safely.
What your child practises
Practises choosing measuring tools and units (balance, graduated cylinder, voltmeter, ammeter, caliper), reading them correctly and following lab safety rules.
Manitoba Curriculum learning outcome: SCI.9.C.2, SCI.9.C.4 · measuring with appropriate tools and units, 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
Which tool measures electric potential difference?
- a voltmeter
- an ammeter
- a balance
a voltmeter
Hint: Voltage is measured in volts.
Question 2
A caliper is best for measuring…
- the time of a reaction
- the small width or diameter of an object
- the temperature of a room
the small width or diameter of an object
Hint: It measures lengths very precisely.
Question 3
A digital scale reads 52.3 g. Which unit does it measure?
- mass
- temperature
- volume
mass
Hint: The gram is a unit of mass.
Question 4
An ammeter is connected…
- in series with the part of the circuit measured
- in parallel across a component
- outside the circuit
in series with the part of the circuit measured
Hint: Current must flow through the meter.
Question 5
How many millimetres are in 4.2 cm?
- 420 mm
- 0.42 mm
- 42 mm
42 mm
Hint: Multiply by 10.
Question 6
You should never taste…
- water from a fountain
- anything in a science lab
- a snack outside the lab
anything in a science lab
Hint: Chemicals and equipment are not food.