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Shruu Khandeshe 5 years, 9 months ago

Pitch is that characteristic of sound by which we can distinguish between different sounds of the same loudness.

Yogita Ingle 5 years, 9 months ago

Pitch of Sound

This depends on the frequency of vibration of the waves.
If the frequency of vibration is higher, we say that the sound is shrill and has a high pitch. On the other hand, if the sound is said to have a lower pitch then it has a lower frequency of vibration.
A bird produces high pitched sound whereas roaring of a lion is a low pitched sound.
Voice of a woman has a high pitch than that of a man.

3Thank You

ANSWER

Definition of ear drum in 2 lines

Posted by Anshu Pandey 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Yogita Ingle 5 years, 9 months ago

Sound waves travel through the ear canal to reach the eardrum. The eardrum is a thin flap of skin that is stretched tight like a drum and vibrates when sound hits it. These vibrations move the tiny bones of the middle ear, which send vibrations to the inner ear. From the inner ear, the message is sent to the brain,

Anshu Pandey 5 years, 9 months ago

definition if ear drum

ANSWER

Send the real photo of sexual organ famale

Posted by Zuber Zuber 5 years, 9 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is cell memberane?

Posted by Shivam Raj 5 years, 9 months ago

CBSE > Class 08 > Science

4 answers

Aditya Narayan Singh 5 years, 9 months ago

The jelly like substance between the nucleus and the cytoplasm is called the cell membrane. The cell membrane is known as plasma membrane.

Shruu Khandeshe 5 years, 9 months ago

Every cell is covered by a thin sheet of skin which is called cell membrane or plasma membrane

Rekha Mehra 5 years, 9 months ago

Outer part of the cell is called cell membrane i hope it help u

Binesh Meher 5 years, 9 months ago

The jelly like substance between nucleus and cytoplasm called cell membrane

3Thank You

ANSWER

What are the causes of air pollution ? Write some points.

Posted by Dhritisha Kalita 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Jatin Jatin 5 years, 9 months ago

Factories, old cars

Adinath Khanale 5 years, 9 months ago

It causes respiratory diseases like emphysema etc.

ANSWER

Monocord vibrating part

Posted by Chahat Sharma 5 years, 9 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Name the vibrating parts producing sound in the following musical instruments

Posted by Chahat Sharma 5 years, 9 months ago

CBSE > Class 08 > Science

4 answers

Jatin Jatin 5 years, 9 months ago

Guitar ?

Ansh Tiwari 5 years, 9 months ago

Sitar

Pranay Chakre 5 years, 9 months ago

Sitar

Suhani Singh 5 years, 9 months ago

Please write the name of instruments

ANSWER

Word mining of chepter chemical effect in electric curren

Posted by Ekrar Khan 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Chahat Sharma 5 years, 9 months ago

Konse hai word meaning please type

ANSWER

Can a rainbow be seen in night time??

Posted by Young Dagger Dick 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Jatin Jatin 5 years, 9 months ago

Yes but it is not rainbow it's called moonbow

🖤 🖤 5 years, 9 months ago

ANSWER

What letral inversion

Posted by Abhas Mishra 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Pranay Chakre 5 years, 9 months ago

In last second line,the spelling of mirror and it is different not it is closer

Pranay Chakre 5 years, 9 months ago

It is a phenomenon in which the right side of an object appear to the left side of mirror and left side of an object appear to the right side of the mirrorit is called lateral inversion or lateral displacement.

ANSWER

What range of temperature is not suitable to get good quality of eggs?

Posted by Shreya Roy 5 years, 9 months ago

CBSE > Class 08 > Science

3 answers

Shreya Roy 5 years, 9 months ago

It is 35 to 40°c

🖤 🖤 5 years, 9 months ago

Low temperature

Ashish Jain Risha 5 years, 9 months ago

low temperature

ANSWER

Why diamond is an element not metalloid

Posted by Jot Kaur 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Manish Jain 5 years, 9 months ago

very nice ouestion

Soumilya Dwivedi 5 years, 9 months ago

diamond is not an element but carbaon is an element. it is a non metal and not a metallic

ANSWER

Why is tap water a good conductor of electrixoty?

Posted by Aniket Shukla 5 years, 9 months ago

CBSE > Class 08 > Science

3 answers

Ranmal Chajjed 5 years, 9 months ago

Because it as salt present in it

Krishna Chauhan 5 years, 9 months ago

Actually tap water is not that much good conductor as it contains salt in small amount which means they have less charge particle i.e ions.So it conducts electricity at some extent only

Anuj Sen 5 years, 9 months ago

Tap water is a good counductor of electrolyte because it contains many salts which have ions

ANSWER

Static force

Posted by Shankar Chaturvedi 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Preethi Baid 5 years, 9 months ago

The friction acting on an object at rest is known as static friction

Aditya Narayan Singh 5 years, 9 months ago

Static force: A static force refers to constant force applied to a stationary object.

ANSWER

Process of nitrogen fixsation

Posted by Arhum Goyal 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Shankar Chaturvedi 5 years, 9 months ago

Hshaind

Pranam Patel 5 years, 9 months ago

Nitrogen fixation is a process by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3). Atmospheric nitrogen or elemental nitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds.

ANSWER

What Is meant by carbonation

Posted by Sobhith Rao 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Carbonation is the chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid.

ANSWER

Name the instrument used to measure earth quake

Posted by Krishnamurti Thavarekere 5 years, 9 months ago

CBSE > Class 08 > Science

6 answers

Aditya Narayan Singh 5 years, 9 months ago

Seismograph or Seismometer is the instrument used to measure earthquake.

Nipun Garg 5 years, 9 months ago

Richter scale

Gaurav Kumarsingh 5 years, 9 months ago

It is my mistake So,l am very realy sorry

Harsh Gautam 5 years, 9 months ago

Its seismogram not seismograph. I checked it

Gaurav Kumarsingh 5 years, 9 months ago

Seismogram

Gaurav Kumarsingh 5 years, 9 months ago

Seismograph

ANSWER

A simple pendullum vibrate 30 times in one minute what is its time period and frequency

Posted by Akshansh Shakya 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Akshansh Shakya 5 years, 9 months ago

Thanks

Harsh Gautam 5 years, 9 months ago

Time period=2 sec. Frequency= 0.5hz. Give a thanks

ANSWER

define frequency of sound wave

Posted by Baljeet Kaur 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Frequency in a sound wave refers to the rate of the vibration of the sound traveling through the air. This parameter decides whether a sound is perceived as high pitched or low pitched. In sound, the frequency is also known as Pitch. The frequency of the vibrating source of sound is calculated in cycles per second.

ANSWER

How will find the valency

Posted by Sana Aadia 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

The atomic number of sodium is 11 (Z=11). The electronic configuration of sodium can be written as 2, 8, 1. 2, 8, 1 electrons are distributed in the shells K, L, M respectively. Therefore, valence electron in sodium is 1 and it needs to lose 1 electron from the outermost orbit to attain octet. Hence, the valency of sodium is 1.

ANSWER

WHAT IS THE WHO

Posted by Sana Aadia 5 years, 9 months ago

CBSE > Class 08 > Science

3 answers

Jatin Jatin 5 years, 9 months ago

Very nice question World health organization

Nipun Garg 5 years, 9 months ago

World health organisation

Shreyash Mahajan 5 years, 9 months ago

WHO refers to 'WORLD HEALTH ORGNISATON '

ANSWER

What is inflammable substances

Posted by Girdhar Maheshwari 5 years, 9 months ago

CBSE > Class 08 > Science

3 answers

Usum Singh 5 years, 9 months ago

Those substance that have low ignition temperature and can catch fire very easily called inflammable substance

Anant Shrivastava 5 years, 9 months ago

Those substances that have very low ignition temperature and easily catches fire are called igniting temperatures

Yogita Ingle 5 years, 9 months ago

Those substances that have very low ignition temperature and easily catches fire and undergoes combustion are termed as inflammable substances. For instance, petrol, alcohol, aerosol sprays, etc.

ANSWER

A short note on drip system

Posted by Abhi/ Nabanita/Priency Panda 5 years, 9 months ago

CBSE > Class 08 > Science

3 answers

Gaurav Kumarsingh 5 years, 9 months ago

Drip irrigation is a type of micro-irrigation system that has the potential to save water nutrients by allowing water to drip slowly to the roots of plants

Anamika Sharma 5 years, 9 months ago

Drip system: in this system the water falls drop by drop just at the position of the roots so it is called drip system

Harsh Gautam 5 years, 9 months ago

Drip system is a type of irrigation which involves pipes connected to roots of the plants which provide water drip to drip to plants . Hence, no water is wasted at all. It is suitable for the regions where a limited quantity of water is available.

ANSWER

What is star

Posted by Penshika Jain 5 years, 9 months ago

CBSE > Class 08 > Science

4 answers

Aditya Narayan Singh 5 years, 9 months ago

A Star is a luminous ball of gas, mostly hydrogen and helium held together by its own gravity.

Gaurav Kumarsingh 5 years, 9 months ago

Star is a made up of very hottest gases It is shape in large from earth but including the earth are sees shape in small

Mogal Afreedbaig 5 years, 9 months ago

Sun

Netra ? 5 years, 9 months ago

A star is an astronomical object consisting of a luminous spherical of plasma held together by its own gravity . The nearest star to the Earth is the Sun

ANSWER

Differentiate between internal fertilisation and external fertilisation

Posted by Anamika Sharma 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Aditya Narayan Singh 5 years, 9 months ago

Internal fertilisation : The fertilisation which takes place inside the female body is called internal fertilisation. But External fertilisation: The fertilisation which takes place outside the female body is called external fertilisation.

ANSWER

Why it is difficult to light a matchstick by striking it on a smooth surface

Posted by Patil Satish 5 years, 9 months ago

CBSE > Class 08 > Science

2 answers

Gaurav Kumarsingh 5 years, 9 months ago

Because didnot possible frication on smooth surface. So,difficut to light a matchstick by striking it on smoot surface.

Harsh Gautam 5 years, 9 months ago

Because the smooth surface does not provide enough friction for the matchstick to be heated up. You may have not studied the heating effect of friction , but we will study it in 9th grade. Happy to help?

ANSWER

What is hotspot of diversity

Posted by Khushi Rana 5 years, 9 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 5 years, 9 months ago

Biodiversity hotspots are defined as regions “where exceptional concentrations of endemic species are undergoing an exceptional loss of habitat”. The concept of biodiversity hotspots was developed by the Norman Myers in 1988 when he identified that the tropical forest losing its plants species as well as habitat. IUCN prepares ‘Red Data Book’. There are 34 areas around the world which are qualified as Biodiversity hotspots. These hotspots represent only 2.3% of the total Earth's land surface.