Mstep Science

What happens when a small amount of salt, seaweed, and sand mixes with water?

• the salt clumps into larger pieces

• the sand and seaweed mix with the salt, and you can still see all the solids

• the sand breaks into pieces too small to be seen

• the seaweed floats to the top

Tags

NGSS.MS-PS1-2

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

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-PS3-4

The picture below shows the sun over the ocean. What does this picture demonstrate about the behavior of light?

• the water reflected the light from the Sun

• the water absorbed the light from the Sun

• The water refracted the light from the Sun

• light does not travel in straight lines

Tags

NGSS.MS-PS4-2

What is matter?

• A state of matter that does not have its own shape

• The form an object takes

• Anything that takes up space and has mass

• The temperature at which a liquid becomes a gas

What is the boiling point?

• The temperature a solid becomes a liquid

• The temperature a liquid becomes a solid

• The temperature a liquid becomes a gas

• Gas changing to a liquid as it is cooled

Tags

NGSS.MS-PS1-4

What is condensation?

• The temperature at which a liquid becomes a solid

• Gas changing to a liquid as it is cooled

• The temperature at which a solid becomes a liquid

• Liquid changing to a gas as it is heated

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is a 'Molecule' as defined in the learning material?

• The process of heat leaving an object changing it from a liquid to a solid

• The smallest unit of a substance that still has all of its properties

• A change in size, shape or state of matter with no new matter being made

• How hard or soft an object is when squeezed

Tags

NGSS.MS-PS1-1

What characterizes 'Gas Molecules'?

• Molecules that are close together, but can still move past each other

• Tightly packed Molecules that do not move around much

• Molecules that are spread apart and can move around freely

• The smallest unit of a substance that still has all of its properties

Tags

NGSS.MS-PS1-4