Sound
A form of energy that you can hear is _____________.
sound
What type of change in matter doesn't make a new kind of matter?
A melted crayon describes a ________ change.
physical
Sound travels in ___________ in all directions.
waves
What type of change in matter makes a new kind of matter and can't be undone?
chemical change
Cooking an egg describes a __________ change.
chemical
Cutting a sandwich is half describes a _________ change.
physical
What do you call a sound wave that reflects enough to be heard again?
an echo
Which size drum has a louder volume; a large drum or a small drum?
a large drum
A soft feather describes what type of physical property?
hardness
When an old car parked outdoors becomes rusty, this describes a ________ change.
chemical
A towel is an example of what state of matter?
solid
What characteristic of sound describes a high or low sound?
pitch
Liquids and _______ take the shape of their container.
gases
A large elephant describes what type of physical property?
size
A desk is an example of what state of matter?
Orange juice is an example of what state of matter?
liquid
What characteristic of sound depends on how much force is used to make an object vibrate?
volume
When can a liquid become a gas?
When it is heated.
A red piece of candy describes what type of physical property?
Chemical
The air in a tire is an example of what state of matter?