OpenSciEd-Unit 8.4 Earth in Space

What is the difference between rotation and revolution?

• Rotation is the Earth spinning on its axis.

• Revolution is the Earth spinning on its axis.

• Rotation is the Earth circling around the Sun.

• Revolution is the Earth circling around the Moon.

Which statement below is NOT true? The Earth's gravity keeps the moon in orbit around the Earth, The moon exerts gravity, The moon's gravity pulls on Earth's ocean waters, The moon's gravity keeps the Earth in orbit around the Sun.

• The Earth's gravity keeps the moon in orbit around the Earth.

• The moon exerts gravity.

• The moon's gravity pulls on Earth's ocean waters.

• The moon's gravity keeps the Earth in orbit around the Sun.

What season is cold and has short day and long nights?

• Spring

• Summer

• Autumn

• Winter

What motion is responsible for the seasons?

• The tilt of the Earth as it revolves around the sun

• The rotation of the Earth on its axis

• The distance of the Earth from the sun

• The elliptical shape of Earth's orbit

An object's gravitational pull depends on its

• volume

• density

• mass

• shape

The longest day of the year is

• Winter Solstice

• Summer Solstice

• Autumn Equinox

• Spring Equinox

What happens to the length of day and night during the fall equinox?

• The day is longer than the night.

• The night is longer than the day.

• The day and night are equal at 12 hours each.

• The day lasts 10 hours and the night lasts 14 hours.

What cycle results from the Earth's tilt on its axis as it revolves around the sun?

• Tides

• Day and Night Cycle

• Seasons

• Lunar Phases

These celestial bodies are icy and have long tails.

• Asteroid

• Meteor

• Comet

• Planet

When Earth's North pole is tilted ​away from the sun, it is winter in the ​______ hemisphere.

• Northern

• Southern

• Eastern

• Western