True or False Multiple Choice Multiple Choice 2 Short Answer Vocabulary

100

F- the same as
The density of a kilogram of iron is less than the density of 1 gram of iron.

100

B- Density
____ is a physical property. a. Oxidation c. Flammability b. Density d. Combustibility

100

D- The loosely crumpled ball contains more air than the tightly crumpled one.
Which statement best explains why a piece of aluminum foil that is tightly crumpled into a ball sinks while the same piece of foil floats when it is loosely formed into a ball? a. Water can seep into the loosely crumpled ball. b. The foil ball weighs more when it is tightly crumpled. c. The density of aluminum changes when its shape changes. d. The loosely crumpled ball contains more air than the tightly crumpled one.

100

Air holes in a dry sponge make sponge initially less dense than the water, when sponge absorbs water, its density increases and it sinks.
Explain why a dry sponge will initially float when placed on the surface of water but will sink after a while.

100

What is gravity
the attractive force between two masses

200

F- Archimedes Principal
Pascal's principle explains the relationship between density and buoyancy.

200

C- mass and volume
Density depends on ____. a. weight c. mass and volume b. mass d. volume

200

B- Volume
Lee has three identical 1-L bottles. One is filled with water, another is filled with air, and the third bottle is filled with soil. What is the same about all three bottles? a. density c. mass b. volume d. weight

200

Cargo ships generally have large, wide bottoms allowing a greater amount of surface to be in contact with the water. If force is exerted over a larger area, the pressure against the water decreases.
Explain how a ship made of materials that are much denser than water is able to float on water.

200

What is a hydrometer
an instrument that measures the density of a material.

300

F- Graduated cylinder
You can use a balance to measure the volume of a liquid.

300

C- Newton
The ____ is a unit of force. a. pascal c. newton b. atmosphere d. kilopascal

300

A- Density
A box sinks when placed in water. What could you change about the box to make it float? a. density c. atmospheric pressure b. temperature d. Archimedes’ principle

300

Standing on your toes exerts more pressure on the floor.
Which would exert more pressure on the floor, standing flat-footed or standing on your toes?

300

What is fluid
any substance that has no definite shape and is able to flow

400

F- Different amounts
A person standing on his or her toes and the same person standing flat footed exert the same amount of pressure on the ground

400

D- buoyancy and density
Archimedes' Principle helps to explain the relationship between ____. a. kinetic energy and density c. pressure and density b. temperature and density d. buoyancy and density

400

A- The balloon would sink
Valerie has a balloon filled with air. When she places it on the surface of a pond, the balloon floats. What would happen to the balloon if Valerie filled the balloon with sand and then placed it on the pond’s surface? a. The balloon would sink. c. The balloon would float in the air. b. The balloon would burst. d.The balloon would float in the water.

400

It would be better to inhale as much air as possible to float in a pool. By filling your lungs with air, your body becomes less dense and therefore floats in water.
You are trying to float in a swimming pool. Would it be better if you inhaled as much air as possible or exhaled as much air as possible?

400

What is buoyant force
upward force exerted by a fluid on any object in the fluid

500

True
A fish with a mass of 5 kg and swimming at a depth of 5 m experiences the same buoyant force as a fish with the same mass swimming at a depth of 10 m.

500

D- Less dense than water
A cork is able to float on water because it is ____. a. a crystalline solid c. small in size b. equal in density to water d. less dense than the water

500

B- buoyant force
Which is the upward force on an swimmer that balances the downward force of gravity and keeps the swimmer from sinking? a. atmospheric pressure c. density b. buoyant force d. pascal

500

The diver will sink.
A diver wearing all her equipment has a mass of 70 kg. The mass of the water she displaces is 78 kg. Will the diver sink or float?

500

What is the Archimedes' Principle
a principal that states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.

Density and Buoyancy

Press F11 for full-screen mode

Edit | Download | Share

Correct Response      Continue