Science Review

Circuit A is constructed using a 6-volt battery, copper wires, and a bell. Circuit B is constructed using a 9-volt battery, string, and a bell. Circuit A produced a sound, but Circuit B did not produce a sound. Which of the following most likely explains why circuit B did not produce a sound?

• The electricity traveled in a complete path.

• There was not a switch in the circuit.

• The bell was designed to produce a small amount of sound energy.

• the string is a poor conductor of electricity.

Some students were studying different types of mixtures. They stirred together one cup of oil and one cup of water in a large glass beaker. They observed that the water settled to the bottom and the oil floated to the top. Which of the following does this investigation demonstrate?

• The oil completely dissolved in the water.

• The oil maintained it physical properties.

• The oil was more dense than the water.

• The oil melted in the water.

Tags

NGSS.MS-PS1-2

Four small metal cylinders were filled with boiling water and placed into different containers. Which container was the best insulator?

• Container 1

• Container 2

• Container 3

• Container 4

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The circuit has three lightbulbs and a bell. Which procedure will result in the green bulb operating, the bell producing a sound, and only one blue lightbulb operating?

• Close Switch 1 and leave Switches 2 and 3 open

• Close Switches 2 and 3, and leave Switch 1 open

• Close Switches 1, 2, and 3

• Leave Switches 1, 2, and 3 open

Tags

NGSS.MS-ETS1-1

An old-fashioned metal toy is shown below. When the candle is lit, the carousel of horses begins to turn. Which of these is the source of energy that makes the carousel turn?

• Thermal energy

• Electrical energy

• Mechanical energy

• Sound energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

A student made a list of activities that involve energy. Which activities on the list are examples of the use of electrical energy?

• Activities 1, 4, and 6

• Activities 2, 5, and 6

• Activities 2 and 3

• Activities 3 and 5

The diagram represents four liquids that each has a different density. Which statement best describes the density of Layer C?

• Layer C is more dense than Layer A and Less dense than Layer B.

• Layer C is more dense than Layer B and less dense than Layer D.

• Layer C is more dense than Layer B and less dense than Layer A.

• Layer C is more dense than Layer D and less dense than Layer B.

Tags

NGSS.MS-PS1-2

A student is investigating how mixtures can be separated. Which of the following combinations will be easiest to separate with a magnet?

• Salt and sand

• Sand and iron nails

• Aluminum cans and sand

• Salt and aluminum cans

Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 2 is closed and the other switches are left open?

• Only the white bulb will operate.

• None of the bulbs will operate.

• Only the white and blue bulbs will operate

• Only the red and yellow bulbs will operate.

Students were asked to list observations of the uses of energy in the classroom. One student's list is provided below. Which observations listed above used sound energy to perform its main functions?

• Observations 1 and 5

• Observations 2 and 6

• Observations 3 and 4

• Observations 5 and 6

Tags

NGSS.MS-PS4-1