Earth
Time it takes the Earth to rotate once.
24 hours
During which phase is the Moon not visible from Earth?
New Moon
What position causes a lunar eclipse?
Earth between Sun and Moon
This causes day and night.
Earth's tilted axis
Which phase can a lunar eclipse occur in?
Full moon
Time it takes the Earth to revolve around the sun once.
1 year / 365 days
What position causes a solar eclipse?
Moon between Earth and Sun
What is Earth’s axial tilt? (give number of degrees)
~23.5°
What is gravity?
Force that pulls objects towards each other.
Imaginary line running around Earth between the North and South Poles.
The axis
Identify 2 features of a full moon.
Fully illuminated, Earth between Sun and Moon (accept others)
The darkest part of an eclipse shadow.
Umbra
Which hemisphere experiences summer in December?
Southern hemisphere
Which celestial body has the greatest effect on Earth’s tides?
What is the difference between rotation and revolution?
Rotation = spinning on axis, Revolution = orbiting another object
The phase of the Moon that is before New Moon.
Waning crescent
You cannot look directly at this type of eclipse without appropriate equipment
Solar eclipse
It is summer in Australia. Describe the position of Earth’s tilt.
Southern Hemisphere tilted towards the Sun
What are spring tides?
Larger tides when Sun, Earth, Moon aligned
What would happen if Earth stopped rotating?
One side constant daylight, one side constant darkness
The amount of time it takes for the moon to orbit the earth.
~27.3 days / 28 days
This type of eclipse is more frequently witnessed.
Lunar eclipse
It is summer in Australia. Explain why temperatures are higher.
Southern Hemisphere tilted toward Sun → more direct sunlight + longer days
What would happen if Earth had no axial tilt?
No seasons occur
Equator receives most direct sunlight → stays warm/hot
North & South poles receive less direct sunlight → stay cold