SCIENCE 10 MELC 123 QUIZ 1

It is the location on the Earth's surface directly above the focus of an earthquake.

• Center

• Focus

• Epicenter

• Fault line

What is the least number of seismic stations needed to locate the epicenter of an earthquake?

• 1

• 2

• 3

• 4

How far is the epicenter of an earthquake to a seismic station if the recorded time difference between P and S waves' arrival is 8 s?

• 200 km

• 160 km

• 100 km

• 80 km

If an earthquake begins while you are in a building, the safest thing for you to do is ______.

• call home and ask for help

• duck near a wall

• get under the strongest table, chair or other piece of furniture

• lie flat on the floor and cover your head with your hands

Why is it important to be aware of places prone to earthquakes?

• to identify when to evacuate

• to identify what crop must be stored

• to locate where to stay best

• to perform necessary precautions

Device used to detect earthquakes.

• Seismograph

• Seismogram

• Seismometer

• earthquake counter

Why is Philippines prone to experience earthquakes?

• The Pacific Ocean causes daily shaking of the archipelago.

• It is within the Pacific Ring of Fire.

• It has plenty of stored energy in the crust part.

• The Philippines is in tropical area.

Which statement BEST describes the location of majority of earthquake epicenters relative to the location of volcanoes around the world?

• They are far adjacent.

• They are always 3 kilometers away from each other.

• They are situated at the same location.

• They are not necessarily relevant.

How will you relate the distributions of mountain ranges, earthquake epicenters, and volcanoes?

• Mountain ranges are found in places between where volcanoes and earthquake epicenters are also situated.

• Mountain ranges are found in places where volcanoes and/or earthquake epicenters are also situated.

• Mountain ranges are found only in places where earthquake epicenters are situated

• Mountain ranges are found only in places where volcanoes are situated.

Which theory states that the entire crust is broken and is continuously moving?

• Continental Drift Theory

• Plate Tectonics Theory

• Seafloor Spreading Theory

• Modern Geologic Theory