Earth Systems

Question 1

layer of different gases found above the surface

Answer 1

Atmosphere

Question 2

bodies of water found on the Earth’s surface, as well as reservoirs stored beneath it

these reservoirs are called “groundwater”

Answer 2

Hydrosphere

covers 71% of the surface, predominantly saltwater

Question 3

where all biological life resides

can include cities and biomes

Answer 3

Biosphere

Question 4

includes processes found both on and underneath the surface

soil, rocks, minerals, etc.

largest of the four systems

Answer 4

Geosphere

Question 5

can be considered the interface (common boundary) of the four systems

Answer 5

Soil

Question 6

Earth’s age

Vital Statistics (NASA)

Answer 6

4.543 billion years old

Question 7

equatorial circumference

Vital Statistics (NASA)

Answer 7

40,075 km

Question 8

equatorial radius

Vital Statistics (NASA)

Answer 8

6,378 km

Question 9

polar radius

Vital Statistics (NASA)

Answer 9

6,356 km

Question 10

total mass

Vital Statistics (NASA)

Answer 10

5.972 x 10^24 kg

Question 11

total volume

Vital Statistics (NASA)

Answer 11

1.08 x 10^12 km^3

Question 12

total surface area

Vital Statistics (NASA)

Answer 12

5.10 x 10^8 km^2

Question 13

average density

Vital Statistics (NASA)

Answer 13

5.513 g/cm^2