EES Final Review

What causes Earth to orbit the Sun?

• Solar energy
• Earth's Momentum
• The Moon
• Jupiter's Gravity

Which of these is largest?

• Galaxy
• Solar System
• Star
• Nebula

Planetary orbits follow what shape?

• Perfect Circles
• Squares
• Ellipses
• Triangles

The Universe is...

• Expanding
• Shrinking
• Staying the same size
• We have no idea what it's doing

Earth orbits...

• The Sun only
• The center of the galaxy only
• Neither the Sun nor the center of the galaxy
• Both the Sun and the center of the galaxy

The change in direction (but not the angle) of Earth's tilt relative to the Sun is called...

• precession
• nutation
• barycenter
• rotational axis

The Moon causes Earth's tilt to wobble every 18 years.  This is called...

• precession
• nutation
• barycenter
• rotational axis

When one object orbits another, both objects are actually orbiting a central point called the...

• precession
• nutation
• barycenter
• rotational axis

Seasons are caused by...

• Earth's rotation
• Earth's elliptical orbit
• The moon
• Earth's tilted axis

Earth's tides are caused by...

• The moon only
• The Sun only
• Both the Sun and the moon
• Neither the Sun nor the moon