EEN 1.1

The Earth's axis will change it's direction due to 

• nutation
• barycenter
• precession

When neither hemisphere is tilted toward or away from the sun, it is called a(n) 

• equinox.
• solstice.
• orbit.
• answer not given.

The path an object takes as it moves around another is 

• rotation.
• revolution.
• orbit.
• trail.

The spinning of Earth on its axis is called

• rotation.
• revolution.
• orbit.
• inertia.

The movement of one object around another is

• rotation.
• revolution.
• orbit.
• inertia.

Fill in the blanks:
The _________ is made of________.

• Earth;Ocean
• Universe;Galaxies
• World;Criminals
• Solar System;Galaxies

What is a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleolus called? 

• Nuclear Fusion
• Nuclear Fission
• Photosynthesis
• Elements

What is a result of and approximate 23.5 degree tilt and revolution of Earth? 

• Moons orbit around the Earth
• Tides
• Seasons
• The Earth's rotation around the Sun

Planets orbit the Sun in a shape called a(n)

• circle
• ellipse
• focus
• perihelion

An ellipse is drawn around two points called

• aphelion
• perihelion
• foci
• axis