The Earth's Movement
How long does one full rotation of the Earth take?
24 hours
What are the imaginary lines that run from east to west called?
Parallels
What season is it in the Southern Hemisphere when it is winter in the Northern Hemisphere?
Summer
What force keeps the Moon in orbit around Earth?
Gravity
Why are polar regions colder than the tropics?
They receive less direct sunlight.
What are the two main types of Earth’s movements?
Rotation and Revolution
What are the imaginary lines that run from the North to the South Pole?
Meridians
What causes the seasons on Earth?
The tilt of the Earth's axis and its revolution around the Sun
What is the Moon? (in relation to Earth?)
Earth’s only natural satellite
What is the imaginary line that Earth rotates around?
The axis
In which direction does the Earth rotate?
Anti-clockwise or west to east
What is the main reference parallel called?
The Equator
What happens to the length of days in the Northern Hemisphere during winter?
They get shorter
What causes the different phases of the Moon?
The position of the Moon relative to the Earth and Sun
How does the Moon affect the Earth’s oceans?
It causes tides due to its gravitational pull
What is the tilt of the Earth's axis?
23.5°
What is the name of the main meridian used as a reference?
The Greenwich Meridian
When does summer start in the Northern Hemisphere?
June 21st - Summer Solstice
How long does the Moon take to complete one orbit around the Earth?
About 27.3 days
What is the region between the Tropic of Cancer and Tropic of Capricorn called?
The tropical zone
How does the Earth's tilt affect the planet?
It causes seasons by changing how much sunlight different areas receive
Name two important parallels besides the Equator.
Tropic of Cancer, Tropic of Capricorn, Arctic Circle, Antarctic Circle
When does the autumn equinox occur?
September 23rd, when day and night are equal
Name the four main phases of the Moon.
New Moon, First Quarter, Full Moon, Last Quarter
What is the name of the shape of Earth's orbit around the Sun?
Elliptical