Vocabulary
What is a chemical change?
what is a change that can not be undone
Two objects rubbing together to slow something down, stop, create heat, create light or create sound.
What is friction?
moves from hot to cold
What is heat energy
What are the 3 states of matter?
What process cause wind around the globe?
What is convection?
What is a physical change?
what is a change that can be reversed or undone
How will a full heavy wagon move when pushed up a hill and down a hill?
It will be more difficult to move up the hill and more difficult to stop going down the hill.
Heat transfer through air and water?
What is Convection
taking heat away from liquid matter turns it to ?
What is ice?
What process causes the water temperatures to change in the ocean?
What is convection
What is gravity?
A force that pulls objects towards each other
Which forces are working against a skydiver ?
Gravity is forcing down while friction (air resistance) slows them down.
Another term for heat
If 40grams of ice are placed in a pot to boil. How much water vapor can you potentially create?
What is 40grams
Same mass- different look
When heated water vapor cools
Condensation
What is friction?
a force that acts between two objects that are touching
What 3 pieces of information are required to determine the motion of an object?
hint** Triangle
speed, distance, and time
When a beach towel is left outside and dries, what heat transfer caused the evaporation to take place and dry the towel?
What is radiation?
When it is cold outside what types of materials should you wear to protect your skin?
What are insulators
A student is riding a bike and applies the brakes. Which most helps the bike to stop?
Friction
How much matter within an object?
What is mass?
A pencil falls off of a desk. What moves the pencil toward the floor?
Gravity
Why would a can of soda become cold when sitting in a cooler of ice?
What is conduction? Heat transfer through touch.
Why are metal beams shorter in the afternoon and longer in the afternoon, yet they have the same mass?
temperature increased causing it to expand
what type of change creates a new substance?
chemical change
burning, baking, rusting