Unit 9 Study Guide

Approximately how long is the cycle of the moon’s phases?

• 29.5 days

• 15 days

• 45 days

• 60 days

Why does the moon orbit Earth?

• Solar Winds

• Magnetic forces

• Gravity

• Tidal forces

What force keeps satellites, including the moon, orbiting Earth?

• Gravitational force

• Magnetic force

• Electromagnetic force

• Nuclear force

A student increases the force on a rolling cart to see how its acceleration changes. What is the Independent Variable?

• increasing force

• acceleration

• mass of the cart

• friction

In what phase is the moon during a solar eclipse?

• The moon is in the new moon phase during a solar eclipse.

• The moon is in the full moon phase during a solar eclipse.

• The moon is in the first quarter phase during a solar eclipse.

• The moon is in the last quarter phase during a solar eclipse.

What causes a lunar eclipse?

• The Earth comes between the Sun and the Moon

• The Moon comes between the Sun and the Earth

• The Sun comes between the Earth and the Moon

• The Earth moves away from the Sun

What causes a solar eclipse?

• The Moon passes between the Earth and the Sun

• The Earth passes between the Sun and the Moon

• The Sun passes between the Earth and the Moon

• The Moon passes behind the Earth

What happens when the Sun and tilt of the Earth when it is winter in the Northern Hemisphere and summer in the Southern Hemisphere?

• The Northern Hemisphere has summer while the Southern Hemisphere has winter due to the Earth's rotation.
• Both hemispheres experience winter simultaneously because of the Sun's position.
• The tilt of the Earth has no effect on seasonal changes in either hemisphere.
• Earth's tilt creates opposite seasons in Northern and Southern Hemispheres simultaneously.

How does the tilt of the Earth on its axis affect temperatures in different seasons?

• It causes the Earth to be closer to the sun in summer.

• It has no effect on temperatures.

• It makes the Earth warmer in winter.

• It causes the seasons to change, leading to varying temperatures.

What is an equinox?

• • A rare astronomical event when all planets in our solar system align in a straight line

• The time when day and night are of equal length

• • The period when Earth's magnetic poles temporarily reverse polarity

• • A solar eclipse that occurs exactly at the North or South Pole