prequiz

Question 1

The model of the sky is called the Celestial Sphere. The point directly overhead on this sphere is called ———

Answer 1

zenith

Question 2

Our Earth’s axis is tilted by an angle of ——— degrees.

Answer 2

23.5

Question 3

If you stood at the Earth’s North Pole, ——– would be seen overhead.

Answer 3

north celestial pole

Question 4

The path that Sun appears to take around the Celestial Sphere every year is called ——–

Answer 4

ecliptic

Question 5

For observers in Continental United States, the star group: Big Dipper ———

Answer 5

never sets

Question 5

The entire sky is divided into ——- constellations.

Answer 5

88

Question 6

At the ——–, stars rise straight up and set straight down.

Answer 6

equator

Question 7

Big Dipper is an example of a Pattern within the Constellation: ——–

Answer 7

ursa major

Question 8

vertical

Answer 8

latitude

Question 9

horizontal

Answer 9

longitude

Question 10

The time it takes for the Moon to complete one full rotation on its axis = ——–

Answer 10

27.3 days

Question 11

The dark areas on the Moon’s surface are called ———

Answer 11

maria

Question 12

Our Moon is thought to have formed

Answer 12

when a mars sized bullet impacted earth

Question 13

On December 21st, the Sun is ———

Answer 13

southern celestial equator

Question 14

When exactly one half of the Moon is illuminated by the Sun, we say that the Moon is in the ——– phase.

Answer 14

quarter

Question 15

The time taken for the Moon to complete one full cycle of lunar phases is ——–

Answer 15

29.5 days

Question 16

We can see both the near and far sides of the Moon from Earth!

Answer 16

false. rotation period = orbital period
synchronous rotation

Question 17

in 14,000 years what star will become the pole in the northern hemisphere?

Answer 17

vega

Question 18

A lunar eclipse is seen when

Answer 18

earth is in between the sun and moon

Question 19

how many planets can be seen with the unaided eye?

Answer 19

5

Question 20

Eratosthenes measured ——— by observing Sun rays at Alexandria and Syene in Egypt.

Answer 20

diameter of earth

Question 21

Aristotle and most of the ancient Greek scholars beleived in ———

Answer 21

an earth centric model

Question 22

——– is the apparent backward motion of planets against the background stars.

Answer 22

retrogade motion

Question 23

———- had to be introduced by Ptolemy in his model to explain the observed backward motion of planets.

Answer 23

epicycle

Question 24

———- was responsible in developing the new Sun-Centric Model.

Answer 24

copernicus

Question 25

Galileo’s observations regarding ———- showed that the Sun-Centric Model must be correct!

Answer 25

phases of venus

Question 26

It was the great European observer: ———, who had built sophisticated instruments to measure angles of celestial objects in the sky.

Answer 26

tycho brahe

Question 27

For every action there is an equal and opposite reaction. This is ———

Answer 27

newton’s third law of motion

Question 28

Maxwell had realized that light is a form of disturbance that propagates in space. It was called ———–

Answer 28

electromagnetic radiation

Question 29

The weight of an object depends on the local force of gravity. Given that Moon’s gravity is just 1/6th that of Earth’s, one’s weight would be ——- on the Moon.

Answer 29

lower

Question 30

According to Newton’s Second Law, in the presence of an external force, an object will ——–

Answer 30

accelerate

Question 31

Galileo’s observations regarding ———- provided the strongest evidence that the Sun-Centric Model must be correct!

Answer 31

phases of venus

Question 32

According to Newton’s Law of Gravity, the force of gravitational attraction between two bodies increases as their ———-

Answer 32

masses increase

Question 33

The speed required to escape from the gravitational influence of a body is termed the Escape Speed. What is the speed required to escape from Earth?

Answer 33

11 kms/second

Question 34

Light is a disturbance that can be characterized by the distance between successive crests of the disturbance. This is called the ———

Answer 34

wavelength

Question 35

Spring Tides are produced during ———

Answer 35

new and full moon

Question 36

Tides on Earth are produced by ——-

Answer 36

the moon and sun’s gravitational effects