PSA REVIEW #1

student drops a metal bolt into a container of maple syrup and it sinks to the bottom. Why does the metal bolt sink?

• The metal bolt is more dense than maple syrup

• The metal bolt is less dense than water.

• The metal bolt is more dense than water

• The metal bolt is less dense than maple syrup.

Tags

NGSS.MS-PS1-2

Based on the picture below, which statement is correct?D

• The mass of 2 is greater than the mass of 1

• The mass of 2 is less than the mass of 3

• The mass of 2 is greater than the mass of 3

• The mass of 1 is less than the mass of 3

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A science class is studying how well different materials insulate thermal energy. Boiling water (100oC) is poured into glass jars wrapped with different materials. The temperature is recorded after 15 minutes. Which material is the best insulator?

• No wrapping

• Paper towel

• cotton towel

• none of them are good insulators

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

In science class, the teacher uses tongs to safely remove a beaker from a hot water bath. This is because –

• the glass beaker conducts electrical energy

• the glass beaker insulates electrical energy

• the glass beaker conducts thermal energy

• the glass beaker insulates thermal energy

A teacher mixes salt and pepper together in a beaker and asks the students to separate the mixture. Which physical property can be used to separate this mixture?

• Magnetism

• density

• solubility

• conduction

Several ways to separate mixtures are listed below: A student is given a mixture of sugar and water. Which of the ways listed above is the best way to separate the mixture?

• 1

• 2

• 3

• 4

3 A teacher mixes four different colors of candycoated chocolates in a bowl. What would be the best way to separate the four different candies in the mixture?

• Use a sieve to separate the four different colors of candy

• Use a balance to weigh the four different colors of candy

• Use tweezers to separate the four different colors of candy.

• Use filter paper to separate the four different colors of cand

Which of the following is an example of a solution?

• Oil and vinegar

• Salt and oil

• Oil and water

• Salt and water

A teacher mixes a penny, salt and vinegar with 200 mL of water in three beakers and asks students to observe the results. What do the students observe?

• 3 solutions

• 2 solutions and 1 mixture

• 1 solution and 2 mixtures

• 3 mixtures

Tags

NGSS.MS-PS1-2

Will any of the lightbulbs light up in this circuit if the switch remains open?

• No, the circuit isn’t closed with the switch open.

• Yes, only Bulb 3 will light up

• Yes, Bulbs 2 and 3 will light up.

• Yes, Bulbs 1 and 3 will light up