EARTH
What is Earth‘s structure?
Earth is composed of four main layers:the crust,the mantle,the outer core,and the inner core
How long does it take for Earth to rotate?
It takes approximately 24 hours to complete one rotation
Are days on Earth getting longer?
Yes.Due to the moon‘s gravitational pull slowing Earth’s rotation.
What is the largest part of the ocean
The Mariana Trench in the Pacific Ocean
Yes.The movement of liquid iron and nickel in the outer core creates electric currents that generate Earth’s magnetic field
How old is Earth?
Earth is roughly 4.5 to 4.6 billion years old
What does Earth mean?
The ground
Where does most of Earth’s oxygen come from?
About 50% to 80% of world’s oxygen is actually produced by phytoplankton
What is the Largest Living structure?
The Great Barrier Reef
Which type of rocks holds most fossils?
Fossils are almost exclusively found in sedimentary rocks
How far does Earth move?
The Earth revolves around the sub at a speed of roughly 30km/s
Why is Earth the only planet with life?
Earth site in the ”habitable zone” where it is neither too hot or nor to cold for liquid to exist.It also has the protective atmosphere and a magnetic field that shields life form harmful radiation
What is the most abundant gas in the atmosphere?
Nitroxen, which makes up roughly 78% of the air we breathe
How long does it take for sunlight to reach earth
It approximately 8 minutes and 20 seconds
What is the ”Geiod”?
It is the mathematical model of Earth’s shape if it were covered entirely by water and influenced only by gravity and rotation
Why is it called the blue planet?
The Earth’s surface is covered with water,which appears blue from space
Where are most of world’s volcanoes located?
About 90% of all volcanic eruptions occur underwater
What is the greenhouse effect?
It is the process where certain gasses in the atmosphere trap heat,preventing it from escaping into space and keeping the planet warm enough to support life
How hot is the Earth?
The Earth is as hot 9,800 to 10,800 degrees Fahrenheit
How many people participate in Earth Day?
It is Estimated that over 1 billion people in more than 193 countrise participate in Earth Day activities every April 22nd
What is Earth shape?
Earth is not a perfect sphere; it is a oblate spheroid
What is the Pacific Ring of Fire?
It is a massive chain of over 500 active volcanoes
What is the tallest mountain on Earth?
Mount Everest is the highest above sea level at 29,035 feet, but Mauna Kea in Hawaii is taller from base to summit(over 33,000 feet)s though most of it is underwater
Why is Earth inner core so hot?
The Earth’s inner core is so hot due to immense pressure
How much of the ocean remains unmapped?