Lengths, Mass, and Time Intervals Flashcards
Distance from the Earth to the most remote known quasar (black hole)
1.4 x 10^26
Distance from the Earth to the most remote known normal galaxies
9 x 10^25
Distance from the Earth to the nearest Large galaxy
2 x 10^22
Distance from the Sun to the nearest star (Proxima Centauri)
4 x 10^16
One lightyear
9.46 x 10^15
Mean orbit radius of the Earth about the Sun
1.5 x 10^11
Mean distance from the Earth to the Moon
3.84 x 10^8
Distance from the equator to the North Pole
1 x 10^7
Mean radius of the Earth
6.37 x 10^6
Typical altitude (above the surface) of a satellite orbiting the Earth
2 x 10^5
Length of a housefly
5 x 10^-3
Length of a football field
9.1 x 10^1
Size of smallest dust particles
~ 10^-4
Size of cells of most living organisms
~ 10^-5
Diameter of a hydrogen atom
~ 10^-10
Diameter of an atomic nucleus
~ 10^-14
Diameter of a proton
~ 10^-15
Mass of Observable Universe
~10^52
Mass of Milky Way Galaxy
~ 10^42
Mass of the Sun
1.99 x 10^30
Mass of the Earth
5.98 x 10^24
Mass of the Moon
7.36 x 10^22
Mass of Frog
~ 10^-1
Mass of Shark
~ 10^3
Mass of Mosquito
~ 10^-5
Mass of Human
~ 10^2
Mass of Bacterium
~ 1 x 10^-15
Mass of Hydrogen Atom
1.67 x 10^-27
Mass of Electron
9.11 x 10^-31
Age of the Universe
5 x 10^17
Age of the Earth
1.3 x 10^17
Average age of a College Student
6.3 x 10^8
One year
3.2 x 10^7
One day (one revolution of the Earth about its axis)
8.6 x 10^4
One class period
3 x 10^3
Time interval between normal heartbeats
8 x 10^-1
Period of audible sound waves
~ 10^-3
Period of typical radio waves
~ 10^-6
Duration of a nuclear collision
~ 10^-22
Period of vibration of an atom in a solid
~ 10^-13
Period of visible light waves
~ 10^-15
Time interval for light to cross a proton
~ 10^-24
