Earth’s Rotation
How long does it take for the Earth to complete one full rotation?
(24 hours / 1 day)
What is the outermost layer of the Earth?
The crust
Which layer of the atmosphere do we live in?
(Troposphere)
What is the phase when the Moon is completely dark?
New moon
How many days in a year?
365 days
Which layer of the Earth is made of hot, melted rock?
the mantle
What protects us from the Sun’s harmful UV rays?
Ozone layer in the Stratosphere
What is the phase when the entire Moon is lit up?
Full Moon
What does Earth’s rotation cause?
(Day and night)
Which layer is the hottest and made of solid metal?
The inner core
What layer burns up meteors before they reach Earth?
The mesosphere
What phase comes after the New Moon?
Waxing Crescent
What is the imaginary line that cuts the Earth in half
The equator
What is the thickest layer of the Earth?
The mantle
Which layer contains the Northern Lights (auroras)
(Thermosphere)
What is it called when the Moon appears to shrink?
Waning phase
If the Earth’s rotation sped up, what would happen to the length of a day?
It would get shorter!
Why is the inner core solid even though it’s the hottest layer?
Because of the pressure
Why do astronauts float in the exosphere?
(Because there is very little gravity!)
How long does it take for the Moon to complete all its phases?
About 29.5 days / 1 month