Approximate Values Flashcards
1
Q
Distance from the Earth to the most remote known quasar
A
1.4×10²⁶
2
Q
Distance from the Earth to the most remote normal galaxies
A
9×10²⁵
3
Q
Distance from Earth to the nearest large galaxy (M 31, the Andromeda Galaxy)
A
2×10²²
4
Q
Distance from the Sun to the nearest star (Proxiama Centauri)
A
4×10¹⁶
5
Q
One Lightyear
A
9.46×10¹⁵
6
Q
Mean orbit radius of Earth about the Sun
A
1.50×10¹¹
7
Q
Mean distance from Earth to the Moon
A
3.84×10⁸
8
Q
Distance from the equator to the North Pole
A
1.00×10⁷
9
Q
Mean radius of the Earth
A
6.37×10⁶
10
Q
Typical altitude (above the surface) of a satelite orbiting the Earth
A
2×10⁵
11
Q
Length of football field
A
9.1×10¹
12
Q
Length of housefly
A
5×10^-3
13
Q
Size of smallest dust particle
A
~ 10^-4
14
Q
Size of cells of most living organisms
A
~ 10^-5
15
Q
Diameter of hydrogen atom
A
~ 10^-10
