Constellations and Their Motion

Choose a word from the drop-down menu to complete the sentences below. Early explorers used a(n) [CHOICE 1] to help locate magnetic North. A(n) [CHOICE 2] helped explorers to see the stars closer and in more detail.

Choose a word from the drop-down menu to complete the sentences below. A(n) [CHOICE 2] helped explorers to see the stars closer and in more detail.

Why does the moon seem to change position in the sky every night?

• because of the moon's orbit around the sun

• because of the moon's rotation on its axis

• because of the Earth's rotation on its axis

• because of the sun's orbit around the Earth

On a particular night, the student observed the shape of the Moon to be a full circle. How many days would the Moon take to appear as a full circle again?

• 7 days

• 14 days

• 28 days

• 42 days

The image shows how the Moon revolves around the Earth. How would the Moon appear at position X?

• full moon

• new moon

• waxing gibbous

• waning crescent

How does the rotation of the Earth on its axis contribute to seasonal changes?

• it elongates the Earth's shape

• it alters the speed of Earth's revolution

• it changes the angle of the sunlight at different points in the year

• it causes the Earth to move closer and further away from the sun

Examine the model below and answer the question that follows. Which historical people would consider this model a correct representation of the solar system? [Select only TWO choices]

• Ptolemy

• Nicolaus Copernicus

• Aristotle

• Plato

• Galileo Galilei

The model of the solar system that focuses on the sun at the center is known as what?

• galactic model

• heliocentric model

• terracentric model

• geocentric model

What season is the North Hemisphere experiencing in position A?

• winter

• summer

• fall

• spring

What season is the North Hemisphere experiencing in position B?

• winter

• summer

• fall

• spring