WorksheetsStructure and age of the Earth
Total questions: 15
Worksheet time: 8mins
Which of the Earth's layers is made of very hot liquid metal?
crust
mantle
outer core
inner core
If you were to travel down the Earth at a steady speed, which layer would you likely spend time the most and why?
crust because it is the thinnest layer
crust because it is the thickest layer
mantle because it is the thickest layer
mantle because it is the thinnest layer
What are the element symbols of the two metals that makes the Earth's core?
Ir, N
Fe, N
Fe, Ni
Ir, Ni
What is the idea of continental drift all about?
This idea states that the continents are continously moving over millions of years.
This idea states that the continents were once joined and now they have stopped moving.
This idea states that the continents have started moving in 1912.
This idea states that the continents are moving because they are attracted to each other.
One evidence of continental drift is that different continents have matching fossil records.
True
False
The idea of tectonic plates was proposed first. Later it was supported by the idea of continental drift.
True
False
Alfred Wegener proposed the idea of continental drift.
True
False
Alfred Wegener proposed the theory of plate tectonics.
True
False
On average, the continents are moving a few meters per year.
True
False
Alfred Wegener noticed one of the pattern of continents as shown. How did he describe this pattern?
The continents are resting on top of tectonic plates.
The types of the rocks on the different continents are similar.
The fossils on the different continents match each other.
The shapes of the continents fit together.
How is continental drift related to plate tectonics?
Plate tectonics is an explanation for continental drift.
Continental drift is an explanation for plate tectonics.
Continental drift and plate tectonics have been discovered at the same time.
Plate tectonics is not related to continental drift.
Based on current scientific evidence, what is the estimated age of the Earth?
4 500 years old
4 500 000 years old
4 500 000 000 years old
4 500 000 000 000 years old
Which evidence do scientists use to find the age of the Earth? Tick all that apply.
Age of the oldest trees.
Age of meteorites (rocks from space that fall to the Earth).
Age of the oldest rocks on Earth.
Age of ancient rivers.
Scientists also study Moon rocks to help them discover the age of the Earth. Which is a good reason for this?
Scientists think that the Earth formed at the same time as the rest of the solar system.
Scientists think that the Earth formed earlier than the rest of the solar system.
Scientists think that the Earth formed later than the rest of the solar system.
What is the science term for the area at the center of the Earth?
core
crust
mantle
