Science worksheets for class 12

Which of the following WAS NOT a piece of evidence that Alfred Wegener considered when forming his model of continental drift?

Which of the following events lead to the discovery of the process of sea-floor spreading?

In which of the following regions is plate subduction dominant.

Plate tectonics is a direct result of the interaction between which of the following spheres of Earth?

Earth's lithospheric plates at a rate of a few _____________ every year.

The term "plate tectonics" refers to the fact that the lithospheric crustal plates are moving very slowly across the Earth’s surface.

A tectonic plate boundary where the two plates are scraping alongside each other in a side-swiping motion is referred to as:

The Pacific Ocean is the largest body of water on Earth and is growing larger each year.

The continental drift hypothesis stating that a supercontinent called Pangaea began breaking apart about 200 million years ago was proposed by:

During his lifetime, the main objection to Alfred Wegener’s proposal was the inability to find _________________ for continental drift.

The asthenosphere is _________________ than the lithosphere.

This allows for the ____________ of the lithosphere over the asthenosphere

Which of the following best describes this illustration.

Which of the following is shown in this illustration?

One of the first clues that many people notice about continental drift is that:

A satisfactory mechanism for continental drift was finally discovered when data from ___________________ provided clues to how continents moved.

Which of the following dinosaur species was studied to attempt to solve the mystery of how the fossils of the same animal could be found on two continents separated by thousands of miles of ocean?

Mapping the locations of rocks gives clues as to how they may have moved along cracks in the crust called ______________.