What causes the seasons?
The seasons are caused by Earth's tilted axis as Earth revolves around the Sun. The tilt changes the angle and amount of sunlight each hemisphere receives.
How is Earth's environment unique in the solar system?
Earth has abundant liquid water and a protective atmosphere with temperatures and conditions that support life, making its environment unique in the solar system.
When it is summer in Sydney, Australia what season is it in Montreal, Canada? Explain your reasoning.
It is winter in Montreal. Sydney is in the Southern Hemisphere and Montreal is in the Northern Hemisphere, so when the Southern Hemisphere is tilted toward the Sun for summer, the Northern Hemisphere is tilted away from it for winter.
The two days of the year on which neither hemisphere is tilted toward or away from the sun are called ___________________.
equinoxes
The sun and moon seem to move across the sky each day because of Earth’s ____________________ on its axis.
rotation
Differentiate between revolution and rotation.
Rotation is Earth's spinning on its axis, while revolution is Earth's movement around the Sun.
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