PhET Density Quizizz

Answer this ONLY AFTER you have done Part 1: Intro of the PhET Density Lab.
Because gravity pulls on objects more when they have more mass, increasing mass will make an object ​have more (a)   on Earth.

As you increase volume, an object gets​ (b)   .

Substances like styrofoam will ​ (c)   in water no matter its size or mass. Substances like solid aluminum will ​ (d)   in water no matter its size or mass

• weight
• bigger
• smaller
• float
• sink
• mass
• volume

Based on what you observed in the lab so far, what change is causing the objects to float or sink?

What changes are NOT causing the objects to float or sink?

Part 2: Compare

If you keep the volume the same but increase the mass, the density will (a)   If you keep the mass the same but increase the volume, the density will (b)  

• disappear
• increase
• decrease

How would you describe the relationship between mass, volume, and density if your own words? How do they affect each other?

Part 3: Mystery

1A is made of​ (a)   1B is made of​ (b)   1C is made of​ (c)  

1D is made of ​ (d)   ​ 1E is made of ​ ​ (e)   .

• water
• wood
• glass
• copper
• diamond
• gold

Tags

NGSS.MS-PS1-1

2A is made of​ (a)   2B is made of​​ (b)   2C is made of​ (c)  

2D is made of ​ (d)   ​ 2E is made of ​ ​ (e)  

• water
• gold
• wood
• glass
• copper
• lead
• titanium
• apple

Tags

NGSS.MS-PS1-1

3A is made of​ (a)   3B is made of​​ (b)   3C is made of​ (c)  

3D is made of ​ (d)   ​ 3E is made of ​ ​ (e)  

• water
• gold
• wood
• steel
• human
• ice
• titanium
• apple
• gasoline
• lead

While standing in line at a local burger place, an older man finds out that you are an expert in physics. He tells you that he went to the beach on a recent vacation and saw a huge log floating in the ocean. But when he threw a tiny pebble into the ocean, it sank.

He says that he doesn’t understand why the log didn’t sink since it was so big and the pebble didn’t float since it was so small. He asks if you have any idea why.

Write an explanation of why the log floated but the pebble sank. 

You must use the words mass, volume, and density in your answer!