Protection from Earthquake : Steps to Follow

Q.

What are precautions that should be taken during the earthquake?

Q.

If a body is charged by rubbing it, its weight ____________.

1. Remains precisely constant

2. Increases slightly

3. Decreases slightly

4. May increase or decrease slightly

Q.

What precautions would you take to protect yourself during an earthquake if you are inside the house ?

Q.

What precautions would you take to protect yourself during an earthquake if you are outdoors?

Q.

State any two precautions which should be observed by people living in seismic zones for protection against earthquakes.

Q.

What is quake safe

Q.

Question 11

Suppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself?

Q. Which of the following characteristics make a building 'Quake Safe'?

1. Roofs that are lighter in weight.
2. Heavy construction material.
3. Shelves and cupboards fixed to walls.
4. Fire extinguishing equipment.

Q. Shock absorber in earthquake resistant building is called ___.

1. mass damper
2. base isolator
3. cross braces
4. flexible pipes

Q. What is an earthquake? List the precautions that need to be taken during an earthquake if one is staying indoors or outdoors.

Q. ntblock-2 having mass m and charge Q is held stationary in air with the help of block-1 carrying some charge. If the distance between the blocks is h, then the charge on block-1 isn

Q.

What are seismic dampers and why are they important?

Q. On earthing, a negatively charged body gains electrons to become neutral.

1. False
2. True

Q.

When earthquake strikes, what precautions should a person take to protect himself when

i.) person is at home ii.) person is outside

Q. Suppose you are outside your home and an earthquake strikes. What precaution among the following options you should take

1. Try to find a clear spot, away from buildings, trees and over head power lines. Drop to the ground.
2. If you are in a car or a bus, do not.come out. Ask the driver to drive slowly to a clear spot. Do not come out till the tremors stop.
3. Get under a building so that nothing falls on your head.
4. Try and move immediately to a place where you would feel it is safe

Q. What kind of material should be used in an earthquake prone area?

1. heavy weight
2. conducting material
3. light weight
4. any of the above

Q. State whether the given statement is True or False :

1. True
2. False

Q. During charging by rubbing, number of electrons lost by one body ___ number of electrons gained by other body.

1. Switch the lights off
2. Stay in the building
3. Leave the building at once
4. Lie down in the middle of a room

Q. Mention three precautions that you will take to protect yourself if earthquake strikes when you are inside the house.

Q. What happens when two bodies are rubbed together?

1. They get equal charged but the same nature
2. They get equal charged but the opposite nature
   
3. Nothing happend with rubbing
4. None

Q. In earthquake prone areas, furnitures should be fixed to walls, to overcome tremor during earthquake.

1. True
2. False

Q. Four charges each equal to Q are placed at the four corners of a square and a charge q is placed at the centre of the square. If the system is in equilibrium then the value of q is ___________________

Q. ntFour charges +q, -q, +q, -q are placed in order on the four consecutive corners of a square of side L. The work done in interchanging the position of two negighbouring charges of opposite sign isn ntn ntn

Q. Which if the following precautions must be followed if a house is built in an earthquake prone zone? [3 MARKS]

Q. If you are outside during an earthquake you should seek shelter in a building. State true or false.

1. True
2. False

Q. During charging by rubbing, number of electrons lost by one body ___ number of electrons gained by other body.

1. is equal to
2. is less than
3. is greater than
4. is less than or equal to

Q. What is the scale used to measure the magnitude of the intensity of earthquake?

1. Rain gauge
2. Richter scale
3. Anemometer scale
4. Fujita scale

Q. During an earthquake, it is always advisable to:

1. Stay at the ground floor of a building.
2. Move to the top floor of a tall building.
3. Stay in open area.
4. Stand under a big tree.

Q.

Question 25

Mention three precautions that you will take to protect yourself if an earthquake strikes when you are inside the house.

Q.

Which of the following precautions must be followed if a house is built in an earthquake prone zone?

1. Avoid using heavy materials.

2. If possible, attach furniture to the wall.

3. Fire fighting devices must be easily accessible.

4. All of the above.