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 altitude above the horizon

• To measure a star's path at the equator

What is the definition of Declination 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 altitude above the horizon

• To measure a star's path at the equator

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 observer's head

• The point where stars appear to circle from east to west

• The fixed point in the sky around which all stars appear to rotate

• The point where the celestial equator intersects the horizon

At what latitude will the north celestial pole always be at zenith?

• 0 degrees

• 23.5 degrees

• 45 degrees

• 90 degrees

What determines the star's path in the sky?

• Latitude and the star's declination

• Longitude and the star's right ascension

• Latitude and the star's right ascension

• Longitude and the star's declination

What is the angular size of the moon?

• 0.6 degrees

• 1 degree

• 2 degrees

• 3 degrees

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

• Because your position on Earth determines which constellations remain below the horizon

• Because the sky varies as Earth orbits the sun

• Because the Earth's axis of rotation is inclined relative to the orbital plane

• Because the Sun's altitude changes with the seasons

What is the difference between a geocentric model and a heliocentric model?

• A geocentric model places the Earth at the center of the universe, while a heliocentric model places the Sun at the center of the solar system

• A geocentric model places the Sun at the center of the universe, while a heliocentric model places the Earth at the center of the solar system

• A geocentric model places the Earth at the center of the solar system, while a heliocentric model places the Sun at the center of the universe

• A geocentric model places the Sun at the center of the solar system, while a heliocentric model places the Earth at the center of the universe

What is the relationship between mass and weight?

• Mass is the amount of matter in an object, while weight is the force that acts upon an object

• Mass and weight are the same thing

• Mass is the force that acts upon an object, while weight is the amount of matter in an object

• Mass and weight have no relationship