The celestial sphere

Question 1

Recall the definition of ‘celestial sphere.

Answer 1

The celestial sphere is a model of the sky that appears like a dome overhead, to which the stars are fixed.

Question 2

What is zenith

Answer 2

the point directly above an observer’s head

Question 3

What is nadir

Answer 3

he point directly below an observer’s feet

Question 4

true or false:
The celestial sphere is a real object that rotates around Earth

Answer 4

false

Question 5

true or false:
The celestial equator aligns with the Equator of Earth

Answer 5

true

Question 6

true or false:
An observer can only see about half of the celestial sphere, no matter their location on Earth.

Answer 6

true

Question 7

true or false:
The stars visible on the celestial sphere stay in the same position in the sky all night long.

Answer 7

false

Question 8

true or false:
The stars visible on the celestial sphere stay in the same position relative to each other.

Answer 8

true

Question 9

Marie is standing at the North Pole. Determine which feature of the celestial sphere would be at her zenith.

Answer 9

The North Celestial Pole

Question 10

Molly is standing at the South Pole. Determine which feature of the celestial sphere would be at her nadir.

Answer 10

The North Celestial Pole