Physics Quiz

What is the purpose of Right Ascension in astronomy?

• To measure a star's position south to north relative to the celestial equator

• To measure a star's position west to east relative to the spring equinox

• To measure a star's position east to west relative to the North celestial pole

• To measure a star's position north to south relative to the celestial equator

What is the definition of Declination in astronomy?

• The measure of a star's position west to east relative to the spring equinox

• The measure of a star's position south to north relative to the celestial equator

• The measure of a star's position east to west relative to the North celestial pole

• The measure of a star's position north to south relative to the celestial equator

In which direction does Earth rotate?

• From east to west

• From west to east

• From north to south

• From south to north

What is the North celestial pole?

• The point directly above the North Pole

• The point directly above the South Pole

• The point directly above the Equator

• The point directly above the Tropic of Cancer

At which latitude will the North celestial pole always be at zenith?

• 0 degrees

• 23.5 degrees

• 45 degrees

• 90 degrees

What is the relationship between a star's altitude above the horizon and its declination?

• They are directly proportional

• They are inversely proportional

• They are not related

• It depends on the latitude

At the equator, how long do stars remain above the horizon each day?

• 6 hours

• 12 hours

• 18 hours

• 24 hours

In the Northern Hemisphere, which stars are circumpolar?

• Stars with declination less than the latitude

• Stars with declination greater than the latitude

• Stars with declination equal to the latitude

• All stars are circumpolar

What is the angular size of the moon?

• 0.1 degrees

• 0.3 degrees

• 0.6 degrees

• 1.0 degrees

Why do the constellations we see depend on the latitude and time of year?

• Because the Earth's rotation affects the position of the constellations

• Because the Earth's orbit affects the position of the constellations

• Because the latitude determines which constellations are below the horizon

• Because the time of year determines which constellations are visible