Earth's Layers
Earth's thinnest layer is __________
The Crust
Earth is ___________ years old.
4.5 billion years old
Hydrosphere contains
Earth's water
This is the planet that we live on
Earth
This is the galaxy that we live in
Milky Way
The densest layer of Earth
The inner core
The theory that the universe was created from a single dense point that exploded.
The Big Bang Theory
Biosphere contains
Earth's life
The four inner planets are
Terrestrial planets
This galaxy has arms
Spiral Galaxy
Tectonic plate movement is driven by convection currents in _________
The mantle
The hypothesis that our solar system formed from a huge rotating cloud of gas and dust
The Nebular Hypothesis
Lithosphere is the same as ___________
Geosphere
The four outer planets
Gas Planets
This galaxy does not have a distinct shape
Irregular Galaxy
Earth's magnetic field is created by which layer?
The outer core
All of space and its matter
Universe
This sphere contains air
Atmosphere
The largest planet
Jupiter
This is an oval shape galaxy
Elliptical Galaxy
The Earth's layers in order
Crust, Mantle, Inner Core, Outer Core
The universe is _______ year
13.8 billion years old
The sphere contains Earth's layers
This force keeps planets in orbit
Gravity
This is a cloud of gas and dust
Nebula