Astronomy Sems 1 Review A: Celestial Sphere and Seasons

Front

What causes seasonal changes on Earth?

Back

The tilt of Earth's axis as Earth revolves around the sun.

Front

What is the name of the star closest to the Celestial North Pole?

Back

Polaris.

Front

What are the two points around which the Celestial Sphere spins?

Back

Celestial North and Celestial South Poles.

Front

What Earth system of coordinates is related to the Celestial Sphere's coordinates?

Back

Longitude & Latitude.

Front

What is the Ecliptic?

Back

The path the sun takes in the sky.

Front

Define the Celestial Sphere.

Back

An imaginary sphere surrounding Earth, where all celestial bodies appear to be projected.

Front

What is the significance of the Earth's axial tilt?

Back

It affects the intensity and duration of sunlight received at different latitudes, leading to seasons.

Front

What is the difference between the Celestial Equator and the Earth's Equator?

Back

The Celestial Equator is an imaginary projection of the Earth's equator onto the celestial sphere.

Front

What is the role of Polaris in navigation?

Back

Polaris, or the North Star, indicates true north and is used for navigation in the Northern Hemisphere.

Front

What are the Tropics of Cancer and Capricorn?

Back

The latitudes (23.5° N and 23.5° S) where the sun is directly overhead at noon during the solstices.