Layer Up
The outermost layer of the Earth
Crust
The inner core of the Earth is solid due to _____&_____
heat and pressure
Plates move on the Earth's __________
mantle
Millions of years ago, the continents were joined as one which scientists refer to as __________
Pangaea
The sun appears to rise in ________
East
Thickest layer of the Earth
mantle
Molten rock formed at the edges of the plates
magma
Plates pushing together form ___________
mountains
The distance to the core of the Earth from the crust ( within 2,000 miles)______________
4,000 miles
The higher midday position of the sun in summer is due to Earth's
tilt
Two types of crust
continental and oceanic
The temperature of the Earth at the inner core (within 2,000 degrees)_________
10,000 degrees F
Plates grinding past each other cause
earthquakes
Fingernails grow and the plates move about ___ cm per year
3
The distance between the Earth and Sun is approximately 150__________kilometers
million
The inner core is made up of _____&______
iron and nickel
As depth increases within the Earth, both ______& _______ increase
heat and pressure
The earth is made up of 7 major __________plates
tectonic
The distance around Earth's circumference (within 2,000 miles) ____________
25,000
The Earth rotates on an imaginary _______
axis
__________ waves measure the distance to Earth's core.
seismic
_______ heat is thermal energy from the Earth that's used for heating and cooling. It's created by the planet's formation and radioactive decay
geothermal
Plates float on ________
liquid mantle
The distance from the North Pole to the South Pole (within 2,000 miles) __________-
12,000 miles
___________close to the North Pole such as Greenland experience as much as 20 hours of daylight in the summer.
latitudes