Celestial Coordinates Review

Which two of the following best describes why Earth has 4 different seasons?

• It orbits the sun.

• It rotates on its axis.

• It has only one star in the solar system.

• It has only one moon in the solar system.

On Earth tis coordinate is called latitude. On the celestial sphere it is called:

• precession

• declination

• right acsension

• longitude

The altitude of the sun at noon is 90 degrees on the equinoxes at the _____.

• Tropic of Cancer

• Tropic of Capricorn

• Arctic Circle

• Antarctic Circle

• Equator

Tags

NGSS.MS-ESS1-1

The noon-time sun has an altitude of 90 degrees on the Tropic of Cancer on the first day of _____.

• winter

• spring

• summer

• fall

The sun has an altitude of less than 0 degrees (is beneath the horizon all day long) north of the Arctic Circle in the northern hemisphere ____.

• winter

• spring

• summer

• fall

Philadelphia, PA, has a latitude of 40 degrees N. What is the altitude of the noon-time sun in this city on the first day of summer.

• 90 degrees

• 73.5 degrees

• 40 degrees

• 50 degrees

What is the altitude of the noontime sun in Philadelphia on the spring equinox?

• 40 degrees

• 90 degrees

• 50 degrees

• 23.5 degrees

Planets appear to move against the background stars towards the ___.

• east

• west

• north

• south

The celestial sphere is divided into eat and west hemispheres by lines that run from pole to pole called ___.

• parallels

• meridians

• ecliptic

• equator

What causes our seasons?

• Earth's elliptical orbit

• The tilt of Earth's axis

• The moon

• the sun