Matter Definitions
What is an atom?
How does a gas become a liquid, or a liquid become a solid?
when it is cooled
What is sound?
a form of energy that you can hear
What is a physical property? Give 3 examples
anything about an object that can be observed with your senses
examples could include the color, size, shape, hardness, texture, temperature, mass, or volume of the object
How can people use sound to communicate?
talking, singing, alarms, sirens
What is matter?
How does a solid become a liquid, or a liquid become a gas?
when it is heated
How does sound travel?
through waves in all directions
What is a physical change? Give an example
a change in matter that does NOT make a new kind of matter
cutting/folding paper or mixing matter together
DAILY DOUBLE
What is an audiologist?
a doctor who treats patients with hearing problems
What is mass?
the amount of matter in an object
Describe the physical properties of a solid.
a solid keeps its volume and shape
What is an echo?
a sound wave that is reflected clearly enough to be heard again
What is a chemical change? Give an example
a change in matter that makes a new kind of matter and cannot be undone
baking/cooking food or rust forming on metal
How can people use changes in matter to serve God and other people?
cooking or baking for others
changing matter to make shelter or clothing
What is volume (matter)?
the amount of space an object takes up
Describe the physical properties of a liquid.
What is volume (sound)?
how loud or soft a sound is
What are the 5 ways to make an object vibrate?
hitting, blowing, shaking, rubbing, and plucking
DAILY DOUBLE
Name 3 parts of the ear.
ear flap, ear canal, eardrum, hammer, anvil, stirrup, cochlea, auditory nerve
How can sound be reflected by matter?
How can sound be absorbed by matter?
reflect: sound bounces off of large, hard, smooth surfaces
absorb: rough, soft, uneven surfaces take sound in
Describe the physical properties of a gas.
a gas takes the volume and shape of its container
What is pitch?
Give an example of a mixture.
smoothies might have strawberries, bananas, and yogurt in them
How does the size of an object affect its pitch?
Small objects have a higher pitch because they vibrate faster.
Large objects have a lower pitch because they vibrate slower.