AP 8th Class Physical Science Bits Chapter 11 Some Natural Phenomena with Answers

Practice the AP 8th Class Physical Science Bits with Answers Chapter 11 Some Natural Phenomena on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 8th Class Physical Science Bits 11th Lesson Some Natural Phenomena with Answers

Choose the correct answer.

Question 1.
The upper layer of the earth is called
A) Crust
B) Mantle
C) Inner core
D) Outer core
Answer:
A) Crust

Question 2.
Seismic waves recorded by an instrument called
A) Electroscope
B) Galvanometer
C) Seismograph
D) None of these
Answer:
C) Seismograph

Question 3.
Increase in 2 in magnitude of richter scale means ……….. times more destructive energy.
A) 100
B) 1000
C) 10
D) 10000
Answer:
B) 1000

Question 4.
Hyderabad lies in seismic zone of
A) I
B) II
C) III
D) IV
Answer:
B) II

Question 5.
Unlike charges ………….. each other.
A) repel
B) attract
C) does not react
D) none of these
Answer:
B) attract

Question 6.
Which of the following cannot be charged easily by friction?
A) a plastic scale
B) a copper rod
C) a wollen cloth
D) piece of wood
Answer:
B) a copper rod

Question 7.
When a glass rod is rubbed with a piece of silk cloth
A) Rod and the cloth acquire positive charge
B) Rod becomes positively charged while the cloth has a negative charge
C) Rod and the cloth both acquire negative charge
D) Rod becomes negatively charged while the cloth has a positive charge
Answer:
B) Rod becomes positively charged while the cloth has a negative charge

Question 8.
Discharge takes place between negative and positive charge which produces streaks of bright light is called
A) earthing
B) lightning
C) cracking
D) thunder
Answer:
B) lightning

Question 9.
The outermost layer of the earth is fragmented. Each fragment is called
A) zone
B) plate
C) region
D) area
Answer:
B) plate

Question 10.
The waves produced by tremors on the surface of earth is called
A) earthquake waves
B) seismic waves
C) sound waves
D) light waves
Answer:
B) seismic waves

Question 11.
………… measures energy released by the earthquake more accurately.
A) Richter
B) Moment magnitude
C) Pauling
D) Milliken
Answer:
B) Moment magnitude

Question 12.
Unlike magnetic each other.
A) repel
B) attract
C) both
D) none
Answer:
B) attract

Question 13.
Like charges each other.
A) attract
B) repel
C) both
D) none
Answer:
B) repel

Question 14.
The process of transferring charge from a charged object to earth is called
A) earthing
B) lightning
C) thunder
D) blowing
Answer:
A) earthing

Question 15.
……….. protects us from electric shocks due to any leakage of electric charge.
A) Rarthing
B) Lightning
C) Thunder
D) Blowing
Answer:
A) Rarthing

Question 16.
The layer below the crust is
A) core
B) mantle
C) inner core
D) none of these
Answer:
B) mantle

Question 17.
The innermost layer of earth is
A) crust
B) mantle
C) outermost
D) inner core
Answer:
D) inner core

Question 18.
Choose correct matching options.
Group – A — Group – B
1. Like charges — a) Produce streaks of bright light
2. Unlike charges — (b) Protect us from electric shock due to lekage of charge
3. Earthing — c) Attract
4. Lightning — d) Crust
5. The uppermost — e) Repel
A) 1 – e, 2 – c, 3 – b, 4 – a, 5 – d
B) 1 – a, 2 – b, 3 – c, 4 – d, 5 – e
C) 1 – b, 2 – c, 3 – d, 4 – e, 5 – a
D) 1 – c, 2 – d, 3 – e, 4 – a, 5 – b
Answer:
A) 1 – e, 2 – c, 3 – b, 4 – a, 5 – d

Question 19.
When the glass rubbed with silk cloth, the charge acquired by silk cloth is
A) Positive
B) Negative
C) No charge
D) None of these
Answer:
B) Negative

Question 20.
The device used to test whether an object is carrying charge or not is
A) Microscope
B) Galvanoscope
C) Electroscope
D) Thermoscope
Answer:
C) Electroscope

Question 21.
…………. is a simple device which can be used without any technological back ground to measure the occurrence of earthquake.
A) Seismograph
B) Electroscope
C) Seismoscope
D) Galvanoscope
Answer:
C) Seismoscope

Question 22.
The instrument is called to approximate measure the intensity of earthquake is
A) Seismograph
B) Sesmoscope
C) Gold leaf electroscope
D) Lightening conductors
Answer:
A) Seismograph

Question 23.
“Lightning and spark from your clothes are essentially same phenomena” This experiment was shown by scientist
A) Faraday
B) Newton
C) Benjamin Franklin
D) Volta
Answer:
C) Benjamin Franklin

Question 24.
The destructive earthquakes have magnitudes higher than on ………. the Richter scale.
A) 3.0
B) 4.0
C) 7.0
D) 2.0
Answer:
C) 7.0

Question 25.
It can protects buildings from the effects of lightening.
A) Seismograph
B) Seismoscope
C) Gold leaf electroscope
D) Lightening conductors
Answer:
D) Lightening conductors

Question 26.
The power of earthquake can be expressed in terms of scale.
A) Pauling
B) Milliken
C) Kelvin
D) Ritcher
Answer:
D) Ritcher

Question 27.
The weak zones where earthquakes more likely to occur are called
A) resident zones
B) non-resident zones
C) seismic zones
D) non-seismic zones
Answer:
C) seismic zones

Question 28.
Choose correct matching options.
Group – A Group – B
1. Electroscope — a) Device used to protect buildings from lightning
2. Lightning — b) Used to conductor detect charged object
3. Seismograph — c) Power of earthquake
4. Seismoscope — d) Time of occurance of earthquake
5. Richter scale — e) Instrument records seismic waves
A) 1 – b, 2 – a, 3 – e, 4 – d, 5 – c
B) 1 – a, 2 – b, 3 – c, 4 – d, 5 – e
C) 1 – c, 2 – d, 3 – e, 4 – a, 5 – b
D) 1 – d, 2 – e, 3 – a, 4 – b, 5 – c
Answer:
A) 1 – b, 2 – a, 3 – e, 4 – d, 5 – c

Question 29.
Which activity the given figure represents?
AP 8th Class Physical Science Bits Chapter 11 Some Natural Phenomena with Answers 1
A) Types of charges
B) Testing the presence of charge
C) Effect of rubbing
D) Transfer of charge
Answer:
B) Testing the presence of charge