Spherical Earth
Scientists believe our solar system was formed this many years ago.
What is 4.6 billion years ago?
True or False: Scientists believe our solar system was formed before the Sun.
False
These have allowed scientists to believe that the outer core of earth is liquid.
What are earthquake waves?
Oceans cover roughly this percent of Earth's surface.
What is 70%?
A major characteristic used to differentiate between a plain and a plateau.
What is elevation?
The force that formed Earth into a sphere during creation.
What is gravity?
The system that contains the water in Earth's oceans, seas, lakes, rivers, and glaciers.
What is the hydrosphere?
The alignment of iron minerals in rocks when they are formed reflects the fact that this has reversed itself several times in the past.
What is Earth's magnetic field?
The reason why landforms continue to change?
What is erosion and uplift?
Large, flat areas of land.
What are plains?
The biosphere contains this.
What is all organisms that live on Earth?
The blanket of gases that surround Earth.
What is the atmosphere?
In this layer, rocks are melted and flow.
What is the asthenosphere?
Three major landforms that can be found in the United States.
What are mountains, plateaus, and plains?
The rigid outer shell of Earth.
What is the lithosphere?
This happens to the force of gravity when the distance between two objects decreases?
It increases?
The layer of Earth that is most dense.
What is the inner core?
Earth's core is mostly made of this metal.
What is iron?
This landform has a low relief and high elevation.
What is a plateau?
Earth's magnetic field originates here.
What is the Earth's core?
This belongs to Earth's geosphere.
a. oceans b. oxygen c. dogs d. mountains
What is d. mountains?
Rocks that become hot enough to melt and flow are referred to by scientists as this.
What is plastic?
The thickest of all Earth's layers.
What is the mantle?
The interior plains of the United States were formed when these were deposited millions of years ago.
What are sediments?
Earth's five major systems.
What are the atmosphere, geosphere, biosphere, cryosphere, and hydrosphere.