​Physical Quantity

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

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​You might write the mass of the laptop as:

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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:

​(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

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

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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

Hands on - measurement activity

Groups 3-4 people.

check announcement on canvas