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Measurement-A CommonLanguage

Mass

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Mass

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Mass The measure of the amount of matter

an object contains

Matter: The material that all objectsand substances are made up of

Anything that has mass and takes up space ismatter

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Mass

Units of Mass

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The basic unit of mass in the

SI system is the

The basic unit of mass in the SIsystem is the kilogram.

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What are three objects (other

than in the book) whose masseswould be measured in kilograms.

Car

Teachers Desk

Desk Top Computer

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A smaller objects mass such as

a paper clip would be measuredin

Smaller objects such as a paper clipwould be measure in milligrams.

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Conversions

1 kg = g

1 g = mg

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Conversions

1 kg = 1,000 g

1 g = mg

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Conversions

1 kg = 1,000 g

1 g = 1,000 mg

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Mass

Measuring Mass

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How does a triple-beam

balance work? A triple-beam balance works by

comparing the mass of the object you aremeasuring to a known mass

When you use a triple-beam balance, you:1. Place the object on the pan

2. Shift the riders on the beams until them balancethe mass of the object

Start with the large rider (increments of 100)

Next, the medium sized rider (increments of 10)

Lastly, the small rider (increments of 1)

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Figure 3: Observing - What is

the mass of this turtle?

153.7 grams

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Mass

The Difference Between Mass andWeight

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How would your weight differ if

you were to travel to the moon?

If you were to travel to the moon

your weight would be less.

Your weight would be lesser because

the force of gravity is less.

Weight is a factor of the force ofgravity

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Why would your mass stay

constant if you were to travelto the moon?

Your mass would stay the same if you

were to travel to the moon becausemass is the amount of matter that anobject contains

Since you are still made up of thesame amount of stuff, your mass

would not change

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Why do scientists prefer to

use the mass of an objectinstead of its weight?

Scientists prefer to use an objectsmass instead of its weight becausemass does not change when the forceof gravity does

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Label the different parts ofthe triple-beam balance.

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Label the different parts ofthe triple-beam balance.

Pan

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Label the different parts ofthe triple-beam balance.

PanRiders

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Label the different parts ofthe triple-beam balance.

PanRiders

Beams

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Label the different parts ofthe triple-beam balance.

PanRiders

BeamsPointer