Question

Q1The earth`s crust is broken into a number of huge parts. They are called. *

Choose the correct option

Lithospheric plates

Metamorphic plates

Sedimentary plates

None of these

Q2Which of the following forces originates in the interior of the earth? *

Choose the correct option

Exogenic forces

Endogenic forces

Both (a) and (b)

None of these

Q3Sudden movements in the earth are called *

Choose the correct option

Earthquake

Building mountains

Focus

None of these

Q4The place on the surface above the focus is known as *

Choose the correct option

Epicentre

Focus

Forces

Lithosphere

Q5What is the name of the instrument used for measuring earthquake ? *

Choose the correct option

Thermometer

Seismograph

Weighing machine

All of these

Q6On which scale is the earthquake measured ? *

Choose the correct option

Plane scale

Richter scale

Compass

Divider

Q7Define Seismic waves. 

Q8What are three types of earthquake waves ? *

Q9How can we minimise the impact of an earthquake ?

Q10Give an account of two common earthquake prediction methods adopted locally by people. *


​

Answer 1

Q1 The earth`s crust is broken into a number of huge parts. They are called.

None of these . tectonic plates

Q2 Which of the following forces originates in the interior of the earth? *

Endogenic forces

Q3 Sudden movements in the earth are called

Earthquake

Q4 The place on the surface above the focus is known as

Epicentre

Q5 What is the name of the instrument used for measuring earthquake ?

seismograph

Q6 On which scale is the earthquake measured ? *

The Richter scale

Q7 Define Seismic waves.

Seismic waves are waves of energy that travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy.

Q8 What are three types of earthquake waves ? *

There are three basic types of seismic waves – P-waves, S-waves and surface waves. P-waves and S-waves are sometimes collectively called body waves.

Q9How can we minimise the impact of an earthquake ?

We cannot prevent natural earthquakes from occurring but we can significantly mitigate their effects by identifying hazards, building safer structures, and providing education on earthquake safety. By preparing for natural earthquakes we can also reduce the risk from human induced earthquakes.

Q10Give an account of two common earthquake prediction methods adopted locally by people. *

Earthquake prediction is a branch of the science of seismology concerned with the specification of the time, location, and magnitude of future earthquakes within stated limits, and particularly "the determination of parameters for the next strong earthquake to occur in a region. Earthquake prediction is sometimes distinguished from earthquake forecasting, which can be defined as the probabilistic assessment of general earthquake hazard, including the frequency and magnitude of damaging earthquakes in a given area over years or decades. Not all scientists distinguish "prediction" and "forecast", but it is useful, and will be observed in this article.

Answer 2

Q1. The earth's crust is broken into a number of huge parts. They are called tectonic plates. The answer is None of these.

Choose the correct option:

• Lithospheric plates
• Metamorphic plates
• Sedimentary plates
• None of these

Q2. Which of the following forces originates in the interior of the earth?

Exogenic and Endogenic forces originate in the interior of the earth. The answer is Both (a) and (b)

Choose the correct option

• Exogenic forces
• Endogenic forces
• Both (a) and (b)
• None of these

Q3. Sudden movements in the earth are called an earthquake.

Choose the correct option

• Earthquake
• Building mountains
• Focus
• None of these

Q4. The place on the surface above the focus is known as the epicenter.

Choose the correct option

• Epicenter
• Focus
• Forces
• Lithosphere

Q5. What is the name of the instrument used for measuring earthquakes?

The name of the instrument used for measuring earthquakes is Seismograph.

Choose the correct option

• Thermometer
• Seismograph
• Weighing machine
• All of these

Q6. On which scale is the earthquake measured? The Richter Scale.

Choose the correct option

• Plane scale
• Richter scale
• Compass
• Divider

Q7. Define Seismic waves.

Seismic waves are waves of energy that travel through Earth's layers and are a result of earthquakes, volcano eruptions, lava movement, landslides, and huge man-made explosions that give out low-frequency acoustic energy.

Q9. How can we minimize the impact of an earthquake?

We can minimize the impact of an earthquake by

• Identifying natural hazards
• Building safer houses and structures

Q10. Give an account of two common earthquake prediction methods adopted locally by people.

The common earthquake prediction methods:

• Uncommon animal behavior
• Uncommon water body movement