Units of Mass
Compare the Mass
Mass in real life
Heavier or lighter?
Mass math
100

What unit is used to measure the mass of lighter objects like a pencil or an apple?

A gram


100

Which has more mass: a paperclip or a textbook?

A textbook

100

You’re baking cookies. Which would you measure in grams: the flour or the oven?

The flour

100

Which is heavier: a basketball or a tennis ball?

A basketball

100

If a bag of apples weighs 2 kg and a watermelon weighs 4 kg, what is their total mass?

6 kilograms

200

This is the unit we use for heavier things like a watermelon or a backpack.

A kilogram

200

A basketball has more mass than a soccer ball. True or False?

True

200

When you go to the doctor, they check your mass using this equipment.

A scale

200

Which is lighter: A pair of shoes or a watermelon?

A pair of shoes

200

You have a book that weighs 400 grams. How many grams do 2 books weigh?

800 grams

300

1 kilogram is equal to this many grams?

1,000 grams

300

If you had 3 apples and 1 watermelon, which has more total mass?

A watermelon

300

Name one thing in your backpack that probably has a mass of less than 500 grams.

Ex: A notebook

300

Which has more mass: a truck or a car?

A truck

300

One toy car is 300 grams. Two toy cars would be how many grams?

600grams

400

We use this tool to measure mass in grams or kilograms.

A balance scale

400

Which would likely have a mass closest to 1 kilogram: a cat, a pencil, or a book?

A book

400

Why is it important to know the mass of something when you are mailing a package?

To know how much it costs to send

400

Which object is likely to be lighter: a feather or a coin?

A feather

400

A pencil weighs 20 grams and an eraser weighs 10 grams. What is their total mass?

30 grams

500

If an object weighs less than 1 gram, we might describe it as this kind of object.

A light object

500

What happens to the mass of a sandwich if you add cheese, lettuce, and tomatoes?

It increases

500

A baby elephant has more mass than a baby giraffe. What does that tell you about the elephant?

It has more matter and is heavier

500

If a pumpkin and a watermelon weigh the same, do they have the same mass?

Yes

500

A watermelon weighs 2 kg more than a melon that weighs 3 kg. What is the mass of the watermelon?

5 kilograms

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