Sound
What is Sound?
Sound is a type of energy made by vibrations
What is Light
form of energy that travels in waves
what is a chemical Reaction
when substances change to make new substances
a chart showing all the known elements
what is adaptation
a trait that helps an organism survive in its environment
How does Sound travel
In straight lines. Travels through solids, liquids and gas
No, light can travel through a vacuum
eg(space)
Is burning wood a chemical reactions
yes, it produces new substances like ash and smoke
who created the first periodic table?
Dmitri Mendeleev
Give an example of adaptation
a camel hump stores fat for the energy in the desert
Can sound travel in space
no , because there is no matter to carry the sound waves
Why do we see things
Because they reflect light into our eyes
What are signs of chemical reation
color change, gas,heat or a new solid forming
What is an element?
a pure substance made of only one type of atom
what is inheritance
passing of traits from parents to offspring
What part of the ears helps us hear the sound.
The ear drum and the inner ear help us hear sound.
What is a shadow
is made when an object blocks light
Can chemical Reactions be reversed?
Most are not easily reversible
what does each box on the table show
the element's name , symbol, atomic number, and mass
what taits can be inherited
eye color, hair type, and height
Is sound faster in water or in air?
Sound is faster in water than in air
can Light Bend
Yes light bends when it passes through different materials.
(refraction)
What is a product in a reaction
new substances made by the reaction
what are the groups in the table
Columns of elements with similar properties
why do animals adapt
to survive and reproduce in their environment