Effects of Tectonic Plate Movement

Question 1

The large pieces that make up the Earth's crust are called:

Accepted Answer

Tectonic plates — The crust is broken into moving pieces known as tectonic plates.

Question 2

Most earthquakes and volcanoes occur at:

Accepted Answer

Plate boundaries — Plate boundaries, where plates meet, are the main zones of these hazards.

Question 3

At a convergent boundary, two plates:

Accepted Answer

Collide — Convergent boundaries form where two plates move towards and collide.

Question 4

Fold mountains such as the Himalayas are formed at a:

Accepted Answer

Convergent boundary — Colliding plates crumple the crust upward to form fold mountains.

Question 5

At a divergent boundary, two plates:

Accepted Answer

Move apart — Divergent boundaries occur where plates separate and magma rises.

Question 6

Rising magma at a divergent boundary in the ocean forms:

Accepted Answer

Mid-ocean ridges — Magma filling the gap between separating plates builds mid-ocean ridges.

Question 7

At a transform boundary, plates mainly cause:

Accepted Answer

Strong earthquakes — Plates sliding horizontally past each other trigger strong earthquakes.

Question 8

A powerful undersea earthquake can trigger a:

Accepted Answer

Tsunami — Sudden movement of the seabed during an earthquake can generate a tsunami.

Question 9

When an oceanic plate meets a continental plate, the oceanic plate:

Accepted Answer

Sinks beneath it — The denser oceanic plate subducts (sinks) beneath the continental plate.

Question 10

Indonesia and the Philippines suffer frequent volcanoes because they lie on the:

Accepted Answer

Pacific Ring of Fire — The Pacific Ring of Fire is a belt of active plate boundaries around the Pacific.