What season is the Northern Hemisphere experiencing when it is tilted directly toward the Sun?

• fall

• winter

• spring

• summer

What is the major cause of seasonal changes?

• changes in the tilt of Earth’s axis

• Earth changing its distance from the Sun

• changing patterns in wind and ocean currents

• cycles in the amount of energy released by the Sun

What season is the Northern Hemisphere experiencing when it is tilted away from the Sun?

• spring

• summer

• autumn

• winter

What keeps the planets in orbit around the Sun?

• air resistance

• friction

• gravity

• magnetism

Ocean tides result mainly from

• surface winds

• radiant heat from stars.

• Earth’s tilt on its axis.

• the Moon’s gravitational pull.

If Earth revolved at a faster rate, what would MOST likely occur?

• Annual rainfall would increase.

• Daylight hours would decrease.

• Seasons would be shorter.

• Annual temperature variation would be greater.

What keeps Mars in orbit around the Sun?

• friction

• gravity

• magnetism

• solar power

In this diagram of the Sun and Earth, possible positions of the Moon are identified by numbered points.

At which position could a lunar eclipse occur?

• 1

• 2

• 3

• 4

Raul made a model to show how the position of Earth around the Sun can affect the seasons.

What improvement should be made to the diagram to correctly show how Earth’s position affects seasons?

• Add the tilt of Earth.

• Show the rotation of Earth.

• Show the Moon orbiting the Sun.

• Add the other planets that orbit the Sun.

A student made sketches of a solar eclipse every 10 minutes as shown.

Which of these is MOST likely the next sketch in the sequence?

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