DCA Review

The diagram above shows one container with oil and water and another with oil and a cork. Which diagram below shows what most likely would happen if oil, water, and the cork were all put in the same container?

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Tags

NGSS.MS-PS1-2

A student classifies the above objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

• Magnatism

• Mass

• Electrical Conductivity

• Solubility in water

Tags

NGSS.MS-PS1-2

A teacher gives a student four clear sealed containers. Each container holds a different substance. The student records some observations about the substance in each container. Based on these observations, which container most likely holds only gas? (5.5A)

• Container 1

• Container 2

• Container 3

• Container 4

Two wires carrying electricity can create a spark if they come too close together. This spark can start a fire. Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does the plastic keep the electricity from starting a fire? (5.5A)

• Plastic is a good insulator.

• Plastic can melt when heated.

• Plastic is softer than wire.

• Plastic conducts electricity.

A student puts four objects in a bucket filled with water. Which two objects are most likely less dense than the water? (5.5A)

• Wood block and metal paper clip

• Plastic ball and glass marble

• Metal paper clip and glass marble

• Wood block and plastic ball

Tags

NGSS.MS-PS1-2

Some people add sugar to hot tea. Which property of sugar remains the same when the sugar is in the tea solution?

• The taste of the sugar

• The size of the sugar crystals

• The color of the sugar crystals

• The texture of the sugar crystals

A student is given a beaker container gravel and water. Which of these could ways could the student NOT use to separate the gravel from the water?

• 1

• 2

• 3

• 4

Three different objects that use the same source of energy are shown here. What is the energy source for these objects? (5.6A)

• Light energy

• Mechanical energy

• Sound energy

• Electrical energy

A student made a list of activities that involve energy. Which activities on the list are examples of the use of mechanical energy? (5.6A)

• Activities 1, 4, and 6

• Activities 2, 4, and 5

• Activities 1 and 2

• Activities 3, 5, and 6

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

An old-fashioned metal toy is shown below. When the candle is lit, the carousel of horses begins to turn. Which of these correctly describes the energy that makes the carousel turn? (5.6A)

• Heat from the candle produces currents of warm air.

• Heat from the candle produces electrical energy.

• Light from the candle produces mechanical energy.

• Light from the candle produces wind currents.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4