WorksheetsYear 9 The Earth and Continental Drift Homework Quizizz
Total questions: 20
Worksheet time: 17mins
What is the thinnest layer of the Earth?
Mantle
Core
Crust
The thickest layer of the Earth is
The crust
The mantle
The core
What are Tectonic plates?
Large moving pieces on Earth's surface that are made of rock.
where two plates divide
The inner core of the earth
where magma rises up and solidifies
What is the name for the large landmass of all the continents that formed 175 million years ago?
Pangaea
Laurasia
United Continents
What is the process of magma pushing up through a mid-ocean ridge, forming new crust, and pushing continents apart called?
seafloor spreading
seafloor growing
volcanic volleyball
What is the process of magma in the mantle rising and cooling and sinking and warming that causes the continents to move?
a tiny mouse running on a wheel
magma wheel
convection currents
In what layer of Earth do convection currents happen?
crust
mantle
outer core
inner core
Earthquakes are most common around plate boundaries.
True
False
The process of continental drift took place over thousands of years.
True
False
According to the continental drift hypothesis, the presence of similar fossils in South America and Africa supports which scientific idea?
Animals easily and frequently travel from Africa to South America.
Species of animals probably traveled between continents on natural rafts (such as trees destroyed in tsunamis).
Land bridges once existed that connected the continents.
South America and Africa were once connected together.
The continents move very slowly, only a few __________per year.
meters
kilometers
centimeters
miles
What was Alfred Wegenerś Continental Drift theory?
The continents used to be joined together to form a supercontinent.
The continents have since drifted apart to their current location
Pangaea was formed around 250 million years ago
All of the above
Undersea mountain ranges are called ____________.
rifts
mid-ocean ridges
seafloor spreading
continental drift
