Unit 10
An alloy must include what type of element?
Metal
An acid turns blue litmus paper _____
red
A roller coaster has ____ energy at the top of a hill
Potential
Which force pulls objects toward Earth?
Gravity
The highness or lowness of a sound is called _____
Pitch
A change of state is a ______ change
physical
A base turns red litmus paper ____
Blue
A push or a pull is a ____
Force
The energy of motion is called _____ energy
Kinetic
_____ always moves from warmer objects to cooler objects
Heat
What do you use to separate a mixture by size?
A filter
Lemonade is an example of a _____
Solution
If something is not moving, there is no ____
Work
When is an object in motion?
When it is moving
A transfer of thermal energy between two objects that are touching is called ______________.
Conduction
Fruit salad is a _____
Mixture
What tool separates iron from sand?
Magnet
Speed is ______________/Time
Distance
The force that works against motion is ____
Friction
A material that only lets some light through
Translucent
A way to separate the parts of a solution is through ______
distillation
Combining sodium and chlorine forms a _____ called salt
compound
Acceleration is a change in ____
Velocity
Velocity includes ______________ and speed
direction
The bouncing of light or waves off a surface
Reflection