Science Unit 2 and 3

What is the definition of matter?

• Anything that people can see

• Air

• Solids objects

• Anything that has mass and takes of space

A mixture of sugar and water is different from a mixture of sand and water because when the sugar is mixed with water, the sugar -

• floats on top, but the sand sinks

• can be removed with a magnet, but sand cannot

• dissolves in the water, but the sand does not

Which mixture could be separated easily by pouring it through a paper towel?

• Milk and water

• Sand and water

• Salt and water

• Juice and water

One group of students mixed salt with warm water. Another group mixed sugar with warm water. What is the same about both mixtures?

• The results change color

• The water gets cooler

• The ingredients form layers

• A solid dissolves in the water

An object produces sound because it -

• reflects light from the sun

• generates electrical energy

• absorbs heat from water

• causes air to vibrate

What type of energy is used in an oven to bake a cake?

• Mechanical energy

• Sound energy

• Thermal energy

• Light energy

All of the following objects are used to produce thermal or light energy EXCEPT -

• Lamps

• Ovens

• Candles

• Bicycles

Is Iron a Conductor or Insulator?

• Conductor
• Insulator

Tags

NGSS.5-PS1-3

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

Tags

NGSS.5-PS1-3

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not
• A conductor allows electricity to flow through it easily and an insulator does not.
• An insulator is magnetic and a conductor is not
• A conductor is magnetic and an insulator is not

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3