Earths Formation
Earth is made up of layers. Name the outermost layer.
What is the crust?
Name the three main types of rocks.
What are igneous, sedimentary, and metamorphic?
Who proposed the theory of continental drift?
Who is Alfred Wegener?
The Ring of Fire is located around this ocean.
What is the Pacific Ocean?
What is the process of breaking down rocks into smaller pieces called?
What is weathering?
This layer of Earth is composed of solid iron and nickel.
What is the inner core?
This type of rock forms when magma cools and solidifies.
What is igneous rock?
This supercontinent existed about 300 million years ago.
What is Pangaea?
The Ring of Fire is known for its frequent occurrence of these two natural events.
What are earthquakes and volcanic eruptions?
Name the force that primarily causes erosion.
What is gravity?
How old is the Earth estimated to be?
What is 4.5 billion years old?
Which type of rock is created through high heat and pressure inside Earth?
What is metamorphic rock?
Name the boundary where two tectonic plates slide past each other.
What is a transform boundary?
This U.S. state, located on the Ring of Fire, has many active volcanoes.
What is Alaska?
This type of glacier covers large areas, like Antarctica and Greenland.
What is a continental glacier?
Identify the main difference between arthropods and the insects we see today.
What is 6ft long?
The type of rock that often contains fossils.
What is sedimentary rock?
What causes tectonic plates to move?
What are convection currents?
Approximately what percentage of the world’s active volcanoes are located along the Ring of Fire?
What is about 75%?
This term describes the lines left behind when glaciers wear down rocks.
What are striations?
Name the two plates that combine to create the Himalayas.
What is the Indian and Eurasian Plate?
This process occurs when rocks are broken down and re-formed over time, changing from one type to another.
What is the rock cycle?
Name the 4 proofs for continental drift.
What is continents fitting together, fossil similarities, mountain similarities, and records of ice sheets where there are none today?
Name the process that moves rock and seawater down into the earth.
What is subduction?
The term for the mixture of unsorted sediments that is deposited by a glacier.
What is till?