Measurements in science

Making Accurate Measurements

Learning Intentions
Make measurements of length, mass, time, area and volume
Work with units relevant to your measurements

Length - A measure of something from end to end
Time - The continued sequence of existence
Mass - How much stuff is in an object
Area - The amount of surface a 2D shape can cover
Volume - The 3 dimensional space occupied by matter

​What we measure

Measurements

Multiple Choice

What is a measurement of an object from end to end?

• Length

• Time

• Volume

• Mass

• Area

Multiple Choice

What is a measurement of the continued sequence of existence

• Length

• Time

• Volume

• Mass

• Area

Multiple Choice

What is a measurement for the 3D space occupied by matter?

• Length

• Time

• Volume

• Mass

• Area

Multiple Choice

What is a measurement for the amount of surface a 2D shape can cover?

• Length

• Time

• Volume

• Mass

• Area

Multiple Choice

What is a measurement for how much stuff is in an object

• Length

• Time

• Volume

• Mass

• Area

It is Important to use units!

​Without units your measurement has no meaning

In Science we use SI units from the French Systéme International d'unités.

Multiple Choice

If you are asked to pick up a piece of wood that is length 3, what does that mean?

• 3 millimeters

• 3 meters

• Nothing

• 3rd longest

Measuring length

What are our units?

Millimeters (mm) 10mm = 1cm
Centimeters (cm) 100cm = 1m
Meters (m) 1000m = 1km
Kilometers (km) 0.1km = 100m

Milli means divide by 1000. cent means divide by 100. kilo means multiply by 1000

Our SI unit for length is the meter

Reorder

Reorder the following from smallest to largest

• Millimeter

• Centimeter

• Meter

• Kilometer

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

1cm is the same as

• 10m

• 10mm

• 100mm

• 0.1km

Multiple Choice

100cm is the same as

• 0.1km

• 100mm

• 10mm

• 1m

Multiple Choice

1km is the same as

• 1000mm

• 1000m

• 1000cm

• 100m

Multiple Choice

100mm is the same as

• 1cm

• 10cm

• 1m

• 10m

Time

There are multiple ways to measure time

Seconds, minutes, hours, days, weeks, months, years, decades, centuries, millennia, eons and numerous more

In science we will focus on seconds

Converting Time into seconds

How many seconds in a week?
7 days in a week = 7 days
24 hours in a day = 7 x 24 = 168 hours
60 minutes in an hour = 168 x 60 = 1080 minutes
60 seconds in a minutes = 1080 minutes x 60 = 604,800 seconds

Multiple Choice

How many seconds in 3 minutes

• 120

• 240

• 180

• 300

Multiple Choice

How to calculate many seconds in an hour

• 60s x 60min

• 60s/60min

• 60s x 1h

• 60min x 1h

Measuring area

Area is a 2d measurement

You measure area by getting length x width of an object
The unit for area is m² but we will mostly use cm²

For irregular shapes we have to cut them up or divide them into regular shapes we can calculate the area of such as those in your log tables

Multiple Choice

How many dimensions are measured for area?

• 1

• 2

• 3

• 4

Multiple Choice

What is the area for a sheet that is 10cm length by 10cm width?

• 100

• 100cm

• 100cm2

• 10cm2

Measuring Volume

measuring the volume of a regular shape

Measure the length, width, and height
Multiply them together to calculate the area
lxwxh

The unit in science for area is m³
The unit we will be using mostly is cm³

Measuring Volume

Irregular shapes

How do we measure the volume of irregular shapes?

Multiple Select

How do we measure volume of an object?

• Place it in the bath

• Put it into a graduated cylinder

• calculate lxwxh

• Place in a overflow can with a graduated cylinder beneath the spout

Multiple Choice

What is the unit for volume we will be using mostly?

• cm3

• cm2

• m2

• m3

Multiple Select

What pieces of equipment can be used to measure the volume of an irregular shape

• Beaker

• Graduated Cylinder

• Overflow Can

• Balance