The Earth

Question 1

Radius of Earth?

Answer 1

6371 km

Question 2

Surface area of a sphere equation?

Answer 2

SA = 4(3.14)R^3

Question 3

Surface area of the Earth?

Answer 3

510 million

Question 4

Circumference (equator) equation?

Answer 4

C = 2(3.14)(6371)
C = 2(pie)(R)

Question 5

What is the length of the equator?

Answer 5

40000km

Question 6

Distance between North and South Pole?

Answer 6

20000km (half of equator)

Question 7

Volume of Sphere equation?

Answer 7

V = 4(3.14)(R^3)/3

Question 8

What is a Great Circle?

Answer 8

The largest circle that can be drawn on the surface of the
earth & all like it

Question 9

Important great circles?

Answer 9

Meridians: Great circles that passes through geographic North and
South poles.
Equator: A great circle perpendicular to all meridians

Question 10

What is a geographical pole?

Answer 10

Is either of the two points on the Earth where the
axis of rotation intersects with surface (North Pole + South Pole

Question 11

What is the Prime Meridian?

Answer 11

A meridian that passes through geographic poles (North and South) and also
includes the Greenwich village in UK is conventionally accepted as Prime
Meridian

Question 12

Arcs of a circle formula? (divided into 4)

Answer 12

2(3.14)(R)/4

Question 13

Arcs of a circle formula? (divided into 360)

Answer 13

2(3.14)(R)/360

Question 14

How far is one degree on earth?

Answer 14

111km

Question 15

What is a declination angle?

Answer 15

The angled difference between true north and magnetic north (if magnetic north is east of true north it’s a negative degree - west is positive)