Density Practice

What is the formula was use to calculate density?

Select the MASS of the cube in the problem:

You want to find the density of a baseball. You place it on a scale and find that it is 50g. Then, you dunk it a tank fill with 100mL of water. The water rises to 110mL.

Select the MASS of the cube in the problem:

• 50g

• 100 mL

• 110 mL

• 10 mL

Select the VOLUME of the cube in the problem:

You want to find the density of a baseball. You place it on a scale and find that it is 50g. Then, you dunk it a tank fill with 100mL of water. The water rises to 110mL.

Select the VOLUME of the cube in the problem:

• 50g

• 100 mL

• 110 mL

• 10 mL

Find the DENSITY of the cube in the problem:

You want to find the density of a baseball. You place it on a scale and find that it is 50g. Then, you dunk it a tank fill with 100mL of water. The water rises to 110mL.

Find the DENSITY of the cube in the problem:

• 50g

• 5 g/mL

• 110 mL

• 2 g/mL

Dan is trying to find the density of his favorite pen. He finds its mass is 12g. He drops it in 10mL of water and the water rises to 13mL. Dan does 13-10 = 3mL to find the volume. Then, to find the density he does 12g * 3mL = 36 g/mL. Is he correct?

• Yes!

• No, he should have divided 12g / 3mL

• No, because the volume is 13, not 3

• You can't determine density

Becki wants to know the density of her earring. She finds the mass is 25g. She drops it in 5mL of water and it rises to 10mL. She does (10 - 5 = 5) to find the volume. Then, she does 25g / 5mL = 5 g/mL. She says the density is 5g/mL. Is she correct?

• Yes!

• No, she should have done 25 - 5 = 20

• No, the volume is 10 mL

• Earrings don't have density

You have two keyboards. One is made of high quality metal and has a mass of 50g. The other cheap plastic and only has a mass of 10g. But they are both the same size.

Which is more DENSE?

• The metal keyboard

• The plastic keyboard

• They have the same density

• Metal doesn't have density

You have a big coffee and a small coffee mug. However, you are surprised to find that they have the same mass. Which coffee mug is MORE dense?

• The big coffee mug

• The small coffee mug

• They have the same density

• Coffee mugs don't have density

You have two containers filled with two different liquids. Both the containers are the same size. However, when placed on a scale you find that liquid A has more mass than liquid B. Which liquid is more dense?

• Liquid A

• Liquid B

• They are the same density

• Liquids don't have density

You have one big box and one small box. The boxes have the same mass. However, you know that one is filled with feathers (not dense) while the other is filled with pennies (very dense). Which box is filled with pennies (is more dense)?

• Big box

• Small box

• Neither box

• Pennies don't have density