lesson #2

Lesson #2
E.Q: How to measure things?

​Physical Quantity

​Physical quantities have a numerical value and a unit. In physics, it is essential to give the units of physical quantities.

​

​You might write the mass of the laptop as:

​

mass of the laptop = 2 kg

International System (of measurements): The scientific system of units is called the Système Internationale d’Unités (or SI system). The seven base units of this system are listed in below:

Multiple Choice

SI stands for ___.

• Sports Illustrated

• Scientific Notation

• International System (of measurements)

• Instructional System (of measurements)

​(which way) a line that points from one object or place to another

​​direction

​(how far) the amount of space between two objects or places

​​distance

(movement) the process of changing position

​​motion

​(where it is) the location of an object

​​position

(how fast) the measure of how fast or how slow something moves

​​speed

(how long) a measure of how long something takes

​​time

Match

Match the following

• how far

• how fast

• which way

• where it is

• movement

distance

speed

direction

position

motion

• distance

• speed

• direction

• position

• motion

When doing a science experiment we need to use the correct tool to measure specific things.

​

Choosing the right tool for the job.

Use a stopwatch to measure how long something takes in minutes and seconds.

​​Time

​Use a ruler, tape measure, or grid paper to measure how far (the distance) between two points.

Distance

​Use a scale or balance to measure how heavy something is.

​​Weight

Labelling

What should we use to measure time?

Drag labels to their correct position on the image

tape measure

stopwatch

balance scale

Labelling

What should we use to measure distance?

Drag labels to their correct position on the image

stopwatch

balance scale

tape measure

Labelling

What should we use to measure weight?

Drag labels to their correct position on the image

tape measure

balance scale

stopwatch

Hands on - measurement activity

Groups 3-4 people.

check announcement on canvas