2. celestial quiz

The celestial sphere is:

• A model of the sky as seen from Earth

• A physical sphere surrounding the Earth

• A constellation in the night sky

• A type of telescope

How much of the sphere does an observer on Earth see at any location?

• Half of the sphere

• One-third of the sphere

• The entire sphere

• Two-thirds of the sphere

The ecliptic is:

• The path the Sun appears to trace through the stars

• A type of solar eclipse

• A constellation in the night sky

• The shadow of the Earth on the Moon

Know the definitions of horizon.

• The line at which the earth's surface and the sky appear to meet

• A boundary between the known and unknown

• A point where the sun rises

• A line that divides the earth into two equal parts

Know the definitions of zenith.

• The highest point reached by a celestial or other object

• The lowest point reached by a celestial or other object

• A point of equilibrium

• A point of no return

Know the definitions of altitude.

• Height above sea level

• Depth below ground

• Distance from the equator

• Width of a river

Know the definitions of azimuth.

• A direction or angle measured clockwise from a reference direction

• A type of plant found in arid regions

• A unit of measurement for temperature

• A style of ancient architecture

What is the celestial meridian?

• An imaginary line that divides the Earth into northern and southern hemispheres

• A line that passes through the celestial poles and the zenith of a particular location

• The path that the sun follows across the sky

• A line that marks the boundary between day and night on Earth

Solar noon is the time of day when the sun is at its highest point in the sky. What is solar noon?

• The time when the sun rises

• The time when the sun sets

• The time when the sun is at its highest point in the sky

• The time when the sun is at its lowest point in the sky

The instrument that measures altitude is called a/an:

• Barometer

• Altimeter

• Thermometer

• Hygrometer