Lesson 1: Forces That Change Earth's Surface

Lesson 1:

Forces That Change Earth's Surface

Multiple Choice

What do you call a catastrophic event that is caused by natural processes of Earth?

• force

• changes

• natural disaster

• artificial disaster

Multiple Choice

Which of the following best explains why the Philippines suffers from earthquakes and volcanic eruptions?

• The Philippines is surrounded with mountains.

• The Philippines is located in the Pacific Ring of Fire

• The Philippines is surrounded with huge bodies of water.

• The Philippines is cursed.

Multiple Choice

What do you call the shaking of Earth's crust caused by the sudden release of energy in the rocks underground?

• Earthquake

• Volcanic Eruption

• Typhoon

• Landslide

Multiple Choice

There are two types of earthquakes: The first one occurs because of the movement of the Earth's crust.

What type of earthquake is being described?

• volcanic

• tectonic

• seismic

• epicenter

Multiple Choice

On the other hand, what type of earthquake happens when there is a movement of magma inside a volcano?

• seismic waves

• tectonic earthquake

• volcanic earthquake

• epicenter

Multiple Choice

Who are the people that study seismic waves to determine the epicenter of an earthquake?

• Oceanographers

• Seismologists

• Meteorologists

• Geographer

Multiple Choice

What is the instrument used by seismologists to record seismic waves?

• Scale

• Graph

• seismograph

• Richter magnitude scale

Multiple Choice

What is the agency that monitors, predicts, and determines areas that are prone to natural disasters and other related hazards?

• PHIVOLCS

• DPWH

• DOST

• DSWD

Multiple Choice

How do intensity and magnitude differ from each other?

• Intensity is measured through Richter magnitude scale, while magnitude is determined through the PHIVOLCS Earthquake Intensity Scale.

• Intensity is the measure of the earthquake's severity on Earth's surface and humans, while magnitude is the measure of the energy released by an earthquake.

• Intensity is the measure of the energy released by an earthquake, while magnitude is the measure of the earthquake's severity on Earth's surface and humans.

Multiple Choice

How can be the magnitude of an earthquake be determined?

• by using the seismograph

• by using the Richter magnitude scale

• by using the PEIS

• by using any device

Multiple Choice

What do you call the opening on Earth's surface through which lava, ash, and gas are released?

• cave

• landforms

• ocean

• volcano

Multiple Choice

What specific material is comprised of molten rocks that are stored under Earth's crust?

• ash

• magma

• lava

• lahar

Multiple Choice

How are volcanoes classified?

• based on their shape, structure, and size

• based on their shape and structure only

• based on their structure and size only

• based on their size only

Multiple Choice

What volcano is characterized by having broad, shield-shaped cones with gentle slopes?

• Stratovolcanoes

• Shield volcanoes

• Cinder cone volcanoes

• Composite volcanoes

Multiple Choice

What volcano is characterized for being small and made of cinder and ash?

• Active volcano

• Shield volcano

• Cinder cone volcano

• Stratovolcano

Multiple Choice

How is a stratovolcano or composite volcano characterized?

• They are made up of alternating layers of lava and ash.

• Their eruptions are less violent.

• They are made up of cinder and ash.

• They are usually active for only a short time.

Multiple Choice

What do you call a volcano that has erupted within the last 600 years?

• Mt. Fuji

• active volcano

• potentially active volcano

• Mt. Pinatubo

Multiple Choice

What do you call a volcano that looks young but has no historical record of eruption?

• Inactive volcano

• Potentially active volcano

• Active volcano

• Eruption

Multiple Choice

How can we classify a volcano if it has no record of eruptions within the last 600 years?

• Active volcano

• Potentially active volcano

• Inactive volcano

• Erupted volcano

Multiple Choice

What do you call a fast-moving liquid that is comprised of hot gases, lava particles, and other volcanic matter?

• Pyroclastic flow

• Lava

• Magma

• Lahar

Multiple Choice

How does a volcano erupt?

• When magma is pushed to Earth's surface due to high pressure.

• When lava is pushed to Earth's surface due to high pressure

• When magma is pushed to Earth's surface due to low pressure.

• When lava is pushed to Earth's surface due to low pressure

Integration

Scientists, especially geologists and volcanologists, work hard to gather information about earthquakes and volcanic activities. Every year, because of their efforts, we get to understand more why earthquakes and volcanic eruptions occur.

Perhaps, you would want to contribute to understanding more about activities that happen underneath Earth's surface by becoming a geologist or a volcanologist yourself.