Lesson 1 : Physical Quantities &S.I. Units

Lesson 1 : Physical Quantities &

S.I. Units

1. Physical quantities and units

Learning outcomes

1.1 Physical quantities

1

understand that all physical quantities consist of a numerical magnitude and a unit

2

make reasonable estimates of physical quantities included within the syllabus

1.2 S.I Units

1

recall the following SI base quantities and their units: mass (kg), length (m), time (s), current (A),temperature (K)

express derived units as products or quotients of the SI base units and use the derived units for quantities listed
in this syllabus as appropriate

3

use SI base units to check the homogeneity of physical equations

recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base
and derived units: pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M),giga (G), tera (T)

2

4

Open Ended

Write down the names of as many physical quantities as you can

Dropdown

A physical quantity consists of a(n) ​

Select answer

and a(n)​ ​

Select answer

.

Labelling

Label each of the base physical quantities shown in the picture

Drag labels to their correct position on the image

length

amount of substance

time

luminous intensity

temperature

mass

electric current

Reorder

Reorder the following prefixes from smallest to largest

• pico

• centi

• nano

• micro

• milli

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Reorder

Reorder the following prefixes from smallest to largest

• deci (d)

• kilo (k)

• mega (M)

• giga (G)

• tera (T)

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Match

Match the following

• $$10^{12}$$

• $$10^9$$

• $$10^6$$

• $$10^3$$

• $$10^{-1}$$

terra (T)

giga (G)

mega (M)

kilo (k)

deci

• terra (T)

• giga (G)

• mega (M)

• kilo (k)

• deci

Match

Match the following

• $$10^{-3}$$

• $$10^{-2}$$

• $$10^{-6}$$

• $$10^{-12}$$

• $$10^{-9}$$

milli (m)

centi (c)

micro (u)

pico (p)

nano (n)

• milli (m)

• centi (c)

• micro (u)

• pico (p)

• nano (n)

Hotspot

Select the SI base Unit for the physical quantity:

length

Hotspot

Select the SI base Unit for the physical quantity:

Temperature

Hotspot

Select the SI base Unit for the physical quantity:

Mass

Hotspot

Select the SI base Unit for the physical quantity:

Time

Hotspot

Select the SI base Unit for the physical quantity:

amount of substance

Hotspot

Select the SI base Unit for the physical quantity:

current

Hotspot

Select the SI base Unit for the physical quantity:

Luminous intensity

Starter: List as many physical quantities as you can in

2 minutes.

[2]

What do we mean when we say the Magnitude

of a physical quantity?