chemistry
The symbol Ag stands for which element?
silver
Do atoms ever actually touch each other?
No
what are electromagnetic waves?
a form of radiation that travel though the universe
what galaxy has arms
spiral
If you fill a glass to the brim with ice water and the ice melts, what will happen?
The water level will drop slightly as the ice melts.
can light bend around corners?
yes
What is the significance of frequency in electromagnetic waves?
major effect on the properties of the wave, including its energy.
on the HR diagram what is in the top right
red giants
What do you call an atom that has more protons than electrons?
A cation
Can one bit of light bounce off another bit of light?
yes
Which type of electromagnetic wave has the longest wavelength?
Radio waves
in our galaxy where is our solar system
Orion arm
DNA codes for proteins, which are the building blocks of organisms. What is the most abundant protein in the human body?
Collagen
What makes heat rise?
radiation
What is the use of radio waves?
Standard broadcast radio and television
what shape is the milky way galaxy
spiral galaxy
One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
250 grams
What keeps a bicycle balanced?
gyroscopic effects
What is the wavelength range and frequency range of radio waves?
thousands of metres to 30 cm.
What is located at the center of most galaxies, including the Milky Way?
Supermassive black hole