5.5 A & 5.5 B

Electrical wires are usually covered in plastic to

help prevent electrical fires. Why does the plastic

cover prevent electrical fires?

• A Plastic conducts electricity.

• B Plastic produces electricity.

• C Plastic insulates electricity.

• D Plastic destroys electricity.

• F oil

• H maple syrup

• G lemon juice

• J sugar cube

Tags

NGSS.MS-PS1-2

A teacher has 8 identical wooden cubes at the

front of the classroom. One cube has a mass of 6

grams. What is the total mass of all 8 cubes?

• A 6 grams

• B 40 grams

• C 48 grams

• D 64 grams

Which of the following is the correct definition of

magnetism?

• F An invisible force that causes two items to

  become sticky

• G An invisible force that pulls certain substances

  towards a magnet

• H An invisible force that exists between all

  metals

• J An invisible force that causes the north pole of

  one magnet to pull towards the north pole of

  another magnet

Tags

NGSS.MS-PS2-5

Which of the following is soluble in water?

• A Sand

• B Pepper

• C Oil

• D Honey

The picture below is a model of which physical

state?

• A Solid

• B Liquid

• C Gas

• D Plasma

Tags

NGSS.MS-PS1-1

The left side of the scale has a total mass of

275 grams. The right side has a total mass of 250

grams. What is the easiest way to balance the

scale?

• 
• 
• H Remove the 50 g weight from the left side.

• J There is no way to balance the scale.

In science class, the teacher uses tongs to

safely remove a beaker from a hot water bath.

This is because –

• A the glass beaker conducts electrical energy

• B the glass beaker insulates electrical energy

• C the glass beaker conducts thermal energy

• D the glass beaker insulates thermal energy

Which of the objects shown below will sink

when placed in a bucket of water?

• F Cork

• G Paper Boat

• H Keys

• J Plastic Cup

Tags

NGSS.MS-PS2-4

Which mixture below could be easily separated

using a sieve?

• A Sugar and water

• B Pebbles and water

• C Oil and water

• D Salt and water