Chapter 16 Sun Earrth Moon Vocab practice

Fill in the blank: The _______ is an imaginary line that divides Earth into its northern and southern hemispheres.

• equator

• prime meridian

• tropic of cancer

• international date line

Fill in the blank: An _______ occurs when Earth's axis is not leaning toward or away from the Sun.

• equinox

• solstice

• eclipse

• aphelion

Fill in the blank: The _______ is the path an object follows as it moves around another object.

• orbit

• trajectory

• route

• course

Fill in the blank: _______ is the motion of an object around another object.

• revolution

• rotation

• oscillation

• vibration

Fill in the blank: _______ is the spinning motion of an object.

• rotation

• revolution

• oscillation

• vibration

Fill in the blank: The _______ is the line on which an object rotates.

• rotation axis

• equator

• diameter

• tangent

A _______ is a day when Earth's rotation axis is the most toward or away from the Sun.

• solstice

• equinox

• eclipse

• aphelion

Fill in the blank: _______ are large, dark, flat areas on the Moon.

• maria

• craters

• rivers

• mountains

Fill in the blank: A _______ is the lit part of the Moon or a planet that can be seen from Earth.

• phase

• shadow

• crater

• orbit

Fill in the blank: A _______ occurs when less of the Moon's near side is lit each night.

• waning phase

• waxing phase

• full moon

• new moon