6th grade Final #1

A model in science is used as

• a visual representation that helps us understand or explain something in the universe

• a cool car or plane that is tiny and you assemble it with glue

• a thing used to confuse people

• none of the above

Light travels in a _______________.

• circle

• curve

• straight line

• zigzag

Light transmits through which material?

• glass

• wood

• metal

• cardboard

_______ is when light hits and object and it BOUNCES off.

• Reflection
• Refraction

When light bounces off a surface it is

• reflection

• refraction

• transmit

• absorb

What does the term "transmit" mean?

• To absorb

• To bounce off

• To reflect

• To pass through

Which one of these cups is a closed system (no matter can get in or out)?

• 
• 
• 

How do water particles CHANGE when they evaporate?

• They start moving faster

• They get smaller

• They change color

• They disappear

Jenny poured some hot chocolate into a cup and stirred it with a metal spoon.  She noticed the spoon was really warm.  What is the best explanation for this?

• The spoon is a conductor.
• The spoon reflects heat.
• The spoon is an insulator.
• She touched the spoon first and waited to touch the cup.

What observation can you make about what happened to the snowman?

• It changed from a liquid to a solid
• It changed from a liquid to a gas.
• It changed from a gas to a solid.
• It changed from a solid to a liquid.