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What is the another name of Ear Drum ?

Posted by Mukul Dhanjal 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Varun Banda 8 years, 1 month ago

The eardrum, also called the tympanic membrane or myringa.

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what ir electrocope

Posted by Mhod Arman 8 years, 1 month ago

CBSE > Class 08 > Science

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Lakshay Arora 8 years, 1 month ago

It is a instrument used to measure and detecting electricity

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What is reflection ?

Posted by Jatin Rao 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

the throwing back by a body or surface of light, heat, or sound without absorbing it.

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Write laws of reflection ?

Posted by Jatin Rao 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

The knowledge of the laws of reflection is a prerequisite to this article. To recap, the laws of reflection state that,

The angle of reflection of the light reflected from a surface is equal to the angle of incidence at the point of reflection.
The reflected ray, the incident ray and the point of reflection all lie on the same plane.

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What is protoplasm?

Posted by Abhigyan Bhattacharya 8 years, 1 month ago

CBSE > Class 08 > Science

2 answers

Aradhya Singh 8 years, 1 month ago

Living contain of a cell

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Kartik Singh 8 years, 1 month ago

The colourless material comprising the living part of cell including they to plasma , nucleus and other organelles

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Sometime a cracking sounds is heard while taking off a sweater during winter. Explain

Posted by Ishu Nandan 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

When a sweater is taken off, it gets charged because of friction between the sweater and body, static charge gets accumulated on the sweater. While taking off the sweater, an eletric discharge occurs between sweater and the body. Due to this, we hear a crackling sound.

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What is the mean of puberty

Posted by Aman Pky 8 years, 1 month ago

CBSE > Class 08 > Science

2 answers

Priya Chaudhary 8 years, 1 month ago

Puberty marks the time when a child's body starts turning into an adults body

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Kritika Trehan 8 years, 1 month ago

he period during which adolescents reach sexual maturity and become capable of reproduction.

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Simple ans of this question how do we heard sound ? Explian with diagram

Posted by Akanksha Sharma 8 years, 1 month ago

CBSE > Class 08 > Science

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Simple and of my his question how do we heard sound? Explain with diagram

Posted by Akanksha Sharma 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

Sound waves travel into the ear canal until they reach the eardrum. The eardrum passes the vibrations through the middle ear bones or ossicles into the inner ear. The inner ear is shaped like a snail and is also called the cochlea. Inside the cochlea, there are thousands of tiny hair cells. Hair cells change the vibrations into electrical signals that are sent to the brain through the hearing nerve. The brain tells you that you are hearing a sound and what that sound is.

<a href="http://www.dangerousdecibels.org/virtualexhibit/2howdowehearb.html">Take a look inside your ear!
</a>

Each hair cell has a small patch of stereocilia sticking up out of the top it. Sound makes the stereocilia rock back and forth. If the sound is too loud, the stereocilia can be bent or broken. This will cause the hair cell to die and it can no longer send sound signals to the brain. In people, once a hair cell dies, it will never grow back. The high frequency hair cells are most easily damaged so people with hearing loss from loud sounds often have problems hearing high pitched things like crickets or birds chirping.

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Voice of boys become hoarse at punerty

Posted by Sarvesh Ninama 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Varun Banda 8 years, 1 month ago

In boys, under the influence of hormones (testosterone), larynx grows prominently, vocal cords become longer and thicker, causing the voice to become hoarse.

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Force

Posted by Angel R 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Varun Banda 8 years, 1 month ago

A force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. SI unit: newton (N)

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Voice of boys become house at puberty

Posted by Sarvesh Ninama 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

In boys, under the influence of hormones, larynx grows prominently, vocal cords longer and thicker, causing the voice to become hoarse.

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With is the falo of carnnta

Posted by Ashish Kumar 8 years, 1 month ago

CBSE > Class 08 > Science

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What is the lowest temperature at which a substance catches fire called?

Posted by Bipin Kumar 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Khushi Mishra 8 years, 1 month ago

It's ignition temperature

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What is the fungtion of rods and cons in eye

Posted by Gagan Chaudhary 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Kritika Trehan 8 years, 1 month ago

There are two types of photoreceptors in the human retina, rods and cones.

Rods are responsible for vision at low light levels (scotopic vision). They do not mediate color vision, and have a low spatial acuity.

Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity. The central fovea is populated exclusively by cones. There are 3 types of cones which we will refer to as the short-wavelength sensitive cones, the middle-wavelength sensitive cones and the long-wavelength sensitive cones or S-cone, M-cones, and L-cones for short.

The light levels where both are operational are called mesopic.

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Can you see object in the room,can you see object outside the room?

Posted by Shruti Zade 8 years, 1 month ago

CBSE > Class 08 > Science