Earth Facts 1
Earth is the only place in the universe known to be inhabited by ,,,
Living things
How far is the Earth from the Sun?
The Earth is 93 million miles from the Sun
How many hours and minutes does it take Earth to make one rotation on its axis?
23.9 hours OR 23hrs 56min
Earth is composed of four main layers, which are...?
An inner core, and outer core, a mantle, and the crust.
The word Earth means "the ground" and is taken from which language?
From the Old English and Germanic languages
List two facts about the Earth's oceans.
Cover nearly 70% of the planet surface
Contain 97% of the Earth's water
It is the only planet in our solar system to have _____ on the surface
Water
Why is life abundant on Earth?
Earth has a hospitable temperature and a mix of chemicals that have made life abundant
The Moon's gravitational pull on Earth is responsible for ...
Creating the tides that occur in the Earth's oceans twice a day
Where are most of Earth's volcanoes?
Under water
Which geologic features on Earth rest on the lithosphere?
Volcanoes, mountains, and valleys
Describe how the Earth's magnetosphere works.
The rapid rotation of the iron inner core and the liquid outer core create the Earth's magnetic field
What creates the Norther Lights (aurora)?
Solar wind, solar flares, and ultraviolet radiation that come from the Sun
The Earth is the only planet that has a single Moon.
True.
How many days does it take the Earth to revolve around the Sun?
365.25 days
What is the Earth's tilt and what does it mean?
The Earth's axis is tilted at 23.4°, which causes the Earth to have a yearly cycle of seasons
Explain how tectonic plates work.
The lithosphere is divided into tectonic plates that move on top of the asthenosphere, which is made of molten rock
How many minutes does it take the Sun's light to reach Earth?
8 min
What colors are the Earth's aurora?
Green, purple, and pink
Geologic features on the ocean floors provide proof of what relating to the Earth's magnetic poles?
That the magnetic poles have switched from time to time so that the compass needle at one time pointed South
What is the Earth's atmosphere made up of?
98% nitrogen, 21% oxygen, and 1% other gases such as argon, carbon dioxide, and neon
Name two things that the atmosphere does for the Earth.
Shields us from harmful radiation coming from the Sun
It burns up meteors in the atmosphere before they can strike Earth's surface
How think is the Earth's crust on land and in the oceans?
The Earth's crust has the average 19-mile depth on land and a 3-mile depth on the sea floor
What is the Mid-Atlantic Ridge and where is it located?
The Earth's longest mountain range
It runs from the Arctic Ocean through the North Atlantic and through the South Atlantic Oceans
How tall is Hawaii's Mauna Kea?
Taller than Mount Everest from base to summit (with just a little bit poking up above the surface of the water)