Movement of the Earth and Moon

Question 1

Greek philosophers who believed in the spherical model of earth

Answer 1

Pythagoras and Aristotle

Question 2

What is the shape of the earth?

Answer 2

Oblate Spheroid

Question 3

How long is the complete revolution of earth?

Answer 3

365.26 days

Question 4

0 degree longitude

Answer 4

prime meridian

Question 5

180 degree longitude passing over Pacific Ocean

Answer 5

International dateline

Question 6

one lunar revolution is equal to?

Answer 6

28 days

Question 7

The eclipse is a type of syzygy. What is a syzygy?

Answer 7

A straight line configuration of at least three celestial bodies

Question 8

Total, Annular, or Partial solar eclipse: the sun appears as a bright ring and the moon is smaller

Answer 8

annular

Question 9

Total, Annular, or Partial solar eclipse: the moon only partially covers the sun

Answer 9

partial

Question 10

What happens to the moon when there is a lunar eclipse?

Answer 10

Becomes reddish and only little light is reflected on it

Question 11

Constant rise and fall of waters due to interplay of gravitational forces of earth, moon, and sun

Answer 11

tides

Question 12

Spring or Neap tides: sun is in line; moon is in full or new

Answer 12

Spring tides (full)

Question 13

Spring or Neap tides: sun is at right angles; moon is in first or last quarters

Answer 13

Neap tides (low)

Question 14

Who created the geocentric model?

Answer 14

Ptolemy

Question 15

Who created the heliocentric model?

Answer 15

Nicolaus Copernicus

Question 16

Three laws of planetary motion

Answer 16

1) Orbit is an ellipse with the sun in one of the two foci
2) A planet moves faster when closer to the sun
3) Period of revolution is directly proportional to the cube of the distance of the sun

Question 17

Aphelion or Perihelion: nearest point to the sun

Answer 17

Perihelion

Question 18

Apogee or Perigee: farthest point of the sun

Answer 18

Apogee

Question 19

The force that makes a body follow a curved path

Answer 19

Centripetal Force

Question 20

Force that goes against centripetal force

Answer 20

Centrifugal Force and inertia

Question 21

States that gravitational force between two objects is proportional to their masses and inversely proportional to the square of the distance from each other’s centers

Answer 21

Newton’s Law of Gravitation

Question 22

Universal Gravitational Constant is?

Answer 22

6.670 x 10^ -11 Nm^2/kg