Lecture 4

What is the observed angle of a star above the horizon called?

• Latitude

• Altitude

• Right Ascension

• Declination

What is the altitude that you observe Polaris equal to?

• Latitude

• Altitude

• Right Ascension

• Declination

How do astronomers measure the coordinates of stars?

• Latitude and Altitude

• Right Ascension and Declination

• Ecliptic Plane and Sidereal Day

• Seasons and Earth's Tilt

Through which plane does the sun appear to move?

• Latitude Plane

• Altitude Plane

• Right Ascension Plane

• Ecliptic Plane

What is the angle subtended by your finger?

• 1 degree

• 1 arcminute

• 1 arcsecond

• 1 radian

What is 1/60 of a degree known as?

• 1 arcminute

• 1 arcsecond

• 1 radian

• 1 kilometer

What is 1/60 of an arcminute known as?

• 1 degree

• 1 arcsecond

• 1 radian

• 1 kilometer

As viewed above the North Pole, how does the Earth rotate?

• Clockwise

• Counterclockwise

• Upwards

• Downwards

As viewed above the North Pole, how does the Earth orbit around the Sun?

• Clockwise

• Counterclockwise

• Upwards

• Downwards

What does a sidereal day measure?

• Rotation of the Earth

• Orbit of the Earth around the Sun

• Altitude of Polaris

• Declination of Stars