Julia is looking for examples of substances that will dissolve in water. She experiments with some things she finds in her kitchen at home. Which of these will NOT dissolve in water?

• salt
• sugar
• pepper
• coffee

Tags

NGSS.5-PS1-3

Mark and Susan added salt to a flask of water at 9:05 A.M. 
   

What happened in the next 2 minutes? 

• The salt disappeared
• the salt dissolved in the water
• The temperature of the water increased.
• The salt settled to the bottom of the flask

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

The greatest amount of force is required to move the metal block up which inclined plane?

• A
• B
• C
• D

Tags

NGSS.MS-PS2-2

Which inclined plane requires the most force to push the ball to the top?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

Which would have the LEAST gravitational potential energy (GPE)?

• A ball sitting on the ground

• Moon viewed from the Earth

• An airplane flying 30,000 feet above the ground

• A rock sitting on top of Mt. Everest

Tags

NGSS.MS-PS3-2

Which type of potential energy does a match have?

• chemical

• elastic

• frictional

• gravitational

These are examples of

• Insulators

• Conductors

Tags

NGSS.MS-PS2-3

___________________ are materials that ALLOW heat and electricity to move easily through them.

• Conductors

• Insulators

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

______________ are materials that RESIST the flow of heat or thermal energy.

• Conductors

• Insulators

Tags

NGSS.MS-PS3-3

Which of the following is a example of physical change ?

• burning of wood

• milk turning sour

• melting of ice-cream

• ripening of fruit