STAAR Review

Which of the following will most likely cause a puddle of water to evaporate?

• Warm sun
• Rain shower
• Cold weather
• Small rocks

Adding heat to a substance can cause it to change from a -

• gas to liquid
• gas to solid
• liquid to gas
• liquid to solid

Students placed a black block and a white block on each side of a balance.
Based on the results, what can the students say about the two blocks?

• The white block is wider and taller than the black block.
• The white block has more mass than the black block.
• The black block has a lower temperature than the white block.
• The black block has more mass than the white block.

What is happening at the boiling point?

• liquid to gas
• gas to liquid
• solid to liquid
• liquid to solid

What is happening at freezing point?

• gas to liquid
• solid to liquid
• liquid to solid
• liquid to gas

Ice melts to form liquid water at this temperature.

• 0 °C
• 32 °C
• 100 °F
• 212 °F

Which property is least likely to be used to separate this mixture of rocks?

• Magnetic
• Shape
• Size
• Color

You walk into class and there is a cup of clear solution on your desk.  Your task is to figure out WHAT the solution is made of. What do you do?

• Smell it, taste it, evaporate it
• Evaporate the water and examine the properties of the crystals
• Smell it, evaporate it, taste the crystals
• Hope someone else will do something about it

A fan blowing out air is an example of what type of energy?

• sound
• thermal
• mechanical
• light

Would would best complete this circuit?

• A wire
• A switch
• A battery
• A light bulb