STAAR Review

What factor are the students testing the effect of on the time it takes the washers to swing?

• Height of desk

• Length of string

• Number of washers

• Number of swings

Tags

NGSS.MS-PS2-2

A student did an experiment using water. Food coloring was added to help identify the different water samples. Each sample was slowly poured into different containers of warm and cold water. The results are shown in the table here. What question could this experiment have been designed to answer?

• Does the color of the food coloring affect how water reacts in room temperature water?

• How fast does food coloring change the color of water when added to warm water?

• Will hot water react differently when placed in containers of warm and cold water?

• How will different water temperatures react when they are put in warm and cold water?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

According to the data in the table, which of the following statements is true?

• Substances Y and Z have a greater density than W and X.

• Substances Y and W have a greater density than Z and X.

• Substances W and Z are magnetic while Y and X are not.

• Substance Y has a greater mass than Z.

Tags

NGSS.MS-PS1-2

What properties would help you separate white sand and salt?

• Color and texture

• Solubility and density

• Magnetism and elasticity

• Hardness and transparency

Jayla has a bottle of saltwater and sand. She filtered out the sand and was left with saltwater. What could she do to speed up the separation of the water and salt?

• Heat the mixture

• Use a magnet

• Add more sand

• Freeze the mixture

Tags

NGSS.MS-PS1-4

What could a student use instead of a battery in a circuit?

• A solar cell

• More wires

• A larger bulb

• A switch

Why are solar panels helpful?

• They can refract the light to make objects look bigger.

• They can reflect the light so we can see ourselves.

• They can absorb the light and convert it into electricity.

• They can transmit the light without changing it.

Tags

NGSS.MS-ETS1-3

Thomas wants to find out how much force is required to pull his pencil bag across his desk. What tool will he need to investigate his question?

• Balance

• Spring scale

• Stopwatch

• Meterstick

Tags

NGSS.MS-PS2-2

Bryan hypothesized that a more-massive rubber ball will bounce higher than a less-massive one if they are dropped from the same height. To test this hypothesis, Bryan will need a–

• meterstick and stopwatch.

• balance and meterstick.

• spring scale and balance.

• stopwatch and balance.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-1

Salt and pepper were mixed together. The particles were the same size. What is the best way to remove the pepper from the mixture?

• Add water to dissolve the salt and filter the pepper.

• Move a magnet through the mixture to remove the pepper.

• Pour the mixture through a screen to separate the particles.

• Heat the mixture so the pepper melts and filter the salt.