P-5.5 Review

• only air

• only steam

• air, light, and steam

• air, steam, and water

Answer explanation

Remember- light is energy, it does not take up space or have mass.

• All of the pieces of sports equipment are the same size.

• All of the pieces of sports equipment are made of matter.

• All of the pieces of sports equipment are the same shape.

• All of the pieces of sports equipment have the same volume.

Answer explanation

They have mass and take up space.

Tags

NGSS.5-PS1-3

• Both the cork and the iron nail are more dense than water.

• Both the cork and the iron nail are less dense than water.

• The cork is more dense than water, and the iron nail is less dense than water.

• The iron nail is more dense than water, and the cork is less dense than water.

Answer explanation

Density is how packed together the molecules are. MORE dense items SINK.

LESS Dense FLOAT

Tags

NGSS.MS-PS1-2

Peter wants to know the volume of object A. He fills a graduated cylinder with 10 mL of water and then places object A inside the graduated cylinder. He draws a before and after diagram in his science notebook.

What is the volume of object A?

• 20 mL

• 15 mL

• 10 mL

• 5 mL

Answer explanation

It was at 10 to start, then moved to 20- the difference is 10 mL

Tags

NGSS.MS-PS1-2

A researcher conducts a study to record the beak size of birds in a forest region.

Which tool and unit of measurement should the researcher use for the study?

• balance in milligrams

• ruler in millimeters

• thermometer in degrees

• stopwatch in seconds

Answer explanation

Rulers measure length, balance measures mass, stopwatch measures time, and thermometer measures temperature.

Tags

NGSS.MS-ETS1-1

A student makes a partial circuit by connecting a battery with a light bulb using wires. The student then completes the circuit using different materials to check if the light bulb glows, as shown in the setup and table.

Which material can be classified as an electrical conductor?

• iron paper clip

• plastic spoon

• rubber band

• strand of wool

Answer explanation

Look at the chart- it's the only one that completes the circuit- this is a physical property of iron- Other physical properties include color, freezing point, boiling point, and Volume.

Tags

NGSS.4-PS3-2

The densities of 4 different liquids P, Q, R, and S are related as shown:

liquid P > liquid Q > liquid S > liquid R

A student takes 15 mL of each liquid and pours all 4 into a graduated cylinder one after the other. He leaves the cylinder undisturbed overnight.

How will the graduated cylinder appear in the morning?

• 
• 
• 
• 

Answer explanation

Remember, MOST DENSE SINKS-LESS DENSE FLOATS. Meaning the most dense on the bottom and least dense on the top.

Tags

NGSS.MS-PS1-2

A student drops a ping pong ball and a steel cube in a bowl of water as shown.

The student observes that the ping pong ball floats while the steel cube sinks in water. What can be concluded from the observation?

• The ping pong ball is more dense than the steel cube and water.

• The steel cube is more dense than the ping pong ball and water.

• The steel cube is more dense than the ping pong ball but less dense than water.

• The ping pong ball is more dense than water but less dense than the steel cube.

Answer explanation

The most dense item would be on the bottom, least dense on top.

A student is designing a boat to carry a marble across a bowl of water. The student observes that a flat rectangle of tin foil floats on the surface of the water and tests the ability of the tin foil to carry a marble, as shown.

The student observes that both the marble and tin foil sink. Which design change would most likely help the tin foil boat carry the marble?

• Crumple the tin foil to make it round to match the shape of the marble.

• Fold the edges of the tin foil up to keep water off the top surface of the tin foil.

• Use a pen to mark the middle of the tin foil to place the marble accurately.

• Use a smaller piece of tin foil to decrease the amount of water on the surface of the tin foil.

Answer explanation

Once the water is added to the top of the boat, the density changes, making the boat with the marble more dense that water.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

A student placed sand in a bowl and added pebbles to it. The student then stirred the contents of the bowl using a spoon. Which statement correctly describes the contents of the bowl?

• It is a mixture as both sand and pebbles keep their separate properties.

• It is a solution as it can be separated into individual substances

• It is a mixture as both sand and pebbles cannot be distinguished separately.

• It is a solution as it is a combination of two solids

Answer explanation

Mixtures can be easily separated. Solutions cannot be easily separated