🌊W3 L1 & L2 - Noticing patterns in the sky - navigating the Pacific

Question 1

Name the red giant in Orion

Answer 1

Betelgeuse

Question 2

Name the blue giant in Orion

Answer 2

Rigel

Question 3

What type of system is the closest apparent star to earth?

Answer 3

Alpha centauri is a triple system

Question 4

How far away is the Orion nebula?

Answer 4

1,344 light years

Question 5

What is the diameter of the Orion nebula?

Answer 5

12 light years

Question 6

How far away is the Andromeda Galaxy?

Answer 6

2.5 x 10⁶ ly

Question 7

How far away is the Large Magellanic Cloud?

Answer 7

160k ly

Question 8

How far away is the Small Magellanic Cloud?

Answer 8

200k ly

Question 9

What part of Scorpius is near the centre of the Milky Way Galaxy?

Answer 9

The tail

Question 10

What is angular size measured in?

Answer 10

Degrees

Question 11

Will something close to you have a larger or smaller angular diameter?

Answer 11

Larger

Question 12

How can you find the South celestial pole?

Answer 12

Intersection of 1) long axis of Southern Cross, & 2) a line drawn perpendicular from the middle of The Pointers

Question 13

What is the angular diameter of a finger held at arm’s length?

Answer 13

1 degree

Question 14

What is the angular diameter of 3 fingers held at arm’s length?

Answer 14

5 degrees

Question 15

What is the angular diameter of a closed fist held at arm’s length?

Answer 15

10 degrees

Question 16

What is the angular diameter of 2nd and 5th digits spread and held at arm’s length?

Answer 16

15 degrees

Question 17

What is the angular diameter of hand fully spread (thumb to 5th digit) held at arm’s length?

Answer 17

25 degrees

Question 18

Name 4 methods Polynesians used to navigate when out at sea

Answer 18

1) Star compass, 2) sky rope, 3) zenith stars 4) prevailing wind

Question 19

Name 4 methods Polynesians could use to navigate when close to land

Answer 19

1) Sea birds, 2) cloud formation, 3) phosphorescence, 4) swell patterns

(ie 2 in the sky, and 2 in the sea)

Question 20

What is declination?

Answer 20

The angular distance of a point in degrees north or south of the equator

Question 21

How could you navigate in space?

Answer 21

With neutron stars