Quiz 1 (1-3)

Question 1

What causes different seasons?

Answer 1

As the earth orbits the sun, the tilt/direction of the axis determines the amount of sunlight (heat) that reaches that portion of earth. If he axis faces the sun than there are more hours of daylight and its summer season. If the axis faces away from the sun than there are less hours of daylight and its winter season.

Question 2

What comes with each season?

Answer 2

Equinox and solstice - relation of earths rotation and the sun

Question 3

What does solstice stand for?

Answer 3

Sol - sun
Stice - stop

Question 4

What is a solstice?

Answer 4

Longest and shortest day, occurs in summer and winter

Question 5

What is equinox?

Answer 5

days with same time of day light to night time, occurs in spring and autumn

Question 6

What does equinox stand for?

Answer 6

eqi - equal
nox - night

Question 7

What does gibbous mean?

Answer 7

more than half the moon is illuminated

Question 8

What does crescent mean?

Answer 8

less than half the moon in illluminated

Question 9

What does waxing mean?

Answer 9

light is opposite to where sun is and increasing

Question 10

What does waning mean?

Answer 10

light is facing sun and decreasing

Question 11

What is a geocentric model?

Answer 11

model of the universe with planets orbiting the earth

Question 12

Who created the geocentric model?

Question 13

What is the heliocentric model?

Answer 13

model of universe with planets orbiting the sun

Question 14

Who created the heliocentric model?

Question 15

What are some similarities between geocentric and heliocentric?

Answer 15

moon rotates in both, provides motion of planets, and envisioned with circular models

Question 16

Why does solstice and equinox happen?

Answer 16

defined by earths position in its orbit relation to the sun. They occur because earths axis spin lies at an angle (23.5 degrees) to the plan on which it orbits the sun

Question 17

What are the azimuth degrees (North, East, South, West)

Answer 17

North - 0
East - 90
South - 180
West - 270

Question 18

What are the altitude degrees?

Answer 18

horizon - 0
zenith - 90

Question 19

What are the gestures to figure out angles?

Answer 19

1 pinky - 1 degree
3 fingers - 5 degrees
fist -10 degrees
fist with first finger and pinky up - 15 degrees
fist with thumb and pinky up - 25 degrees

Question 20

How to locate objects in the sky?

Answer 20

face north and turn to specific degree, than look directly out and look up to a specific angle (altitude)

Question 21

How has wayfinding contributed to our knowledge?

Answer 21

used for centuries, navigation on water using stars is called wayfinding. Most notably used by Polynesians before any fancy tools were invented, by passing down knowledge and tradition they were able to to travel a long distance and not get lost.

Question 22

Why does retrograde happen?

Answer 22

Other planets circle the sun faster than earth, sometimes they overtake our planet in orbit. This causes an illusion of them pausing and moving backward, relative to the background stars and than they continue forward again.

Question 23

What is keplers first law?

Answer 23

the orbit of a planet is not a perfect circle, it is an eclipse. The sun at the centre occupies one focus of the ecliples. A perfect circle orbit has a eccentricity of 0, higher numbers show a flatter oval

Question 24

What is keplers second law?

Answer 24

The planets orbital speed changes, depends on how close or far the planet is from the sun. The closer the stronger suns gravitational pull is therefore the faster it goes, the further the slower. Faster at perihelion (closer to sun) and slower at aphelion (further from sun)

Question 25

What is keplers third law?

Answer 25

a planet farther from the sun has a longer path than a closer planet and moves slower, the longer the orbit takes