Atoms and Bonds
Stored energy that is not yet used is called which type of energy?
Potential Energy
Name one type of light our eyes can't see.
UV, infrared, X-ray, radio, microwave, or gamma
Where does almost all of Earth's energy come from?
The sun
What process is generating the energy from the sun?
Nuclear fusion
What is the definition of energy?
The ability to do work
Which letter marks the amplitude?
A
What two elements make up almost all of the sun?
Hydrogen and helium
In E = mc², what does c stand for?
The speed of light
What decides which element an atom is?
Number of protons
Which letter marks the frequency?
B
Different atoms all give off their own unique fingerprint of what?
The nucleus
Why does breaking a bond cost energy?
Bonded atoms are stable, so you have to add energy to pull them apart
Give one piece of evidence that waves carry energy.
Sunlight warms your skin (or ocean waves move boats, microwaves heat food)
What form of energy do electrons give off when they fall from a higher energy level to a lower energy level?
Light
Why does fusion only happen naturally inside of stars?
It needs extreme heat and pressure
How do two atoms stick together in a bond?
Opposite charges attract; one atom's nucleus pulls on the other's electrons
Which visible color carries the most energy, and why?
Violet, because it has the highest frequency
What is the process called of identifying a star or planet's composition of elements using each atom's unique fingerprint of light?
Spectral Analysis/Spectroscopy
According to E = mc², why does a little bit of mass turn into so much energy?