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A storm is a disturbed state of environment creating severe weather conditions mainly high speed winds. A thunderstorm is a storm with sound and lightning and typically also heavy rain or hail.

Thunderstorms develop in hot and humid areas.
High temperature in this areas cause hot humid (with water vapours) air to rise up. So, strong upward rising winds with water droplets are generated.
At high altitude, these water drops freeze and fall again towards earth.
Upward movement of air and downward movement of water drops, together, cause lightning and sound.

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Si unit of heat

Posted by Jahanvi Mishra 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Majid Rayyan 6 years, 11 months ago

Hi Hru. Your are in grade 7 I need maths notes Chapter linear equations OK And given me your whatsapp Number OK

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Majid Rayyan 6 years, 11 months ago

S. 1 unit of heat is joule

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Any easy equation for decomposition

Posted by Durga Appa 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Dharmendra Kushwaha 6 years, 11 months ago

No easy equation

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Describe the various ways by which seed is dispersed

Posted by Satyam Singh 6 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Abhay Singh Bhadouria 6 years, 11 months ago

Seeds dispersal is addid by÷ 1) By wind 2) By water 3) By water 4) By animals 5) By sticking on our cloths?

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Aanya Trivedi 6 years, 11 months ago

Seed is dispersed by water, wind, animals, birds and bursting

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Nafeeza Safreen 6 years, 11 months ago

1.wind 2.water 3.self-exploitation 4.animals and birds

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Why do we often sneeze when we inhale a lot of dust-landen air

Posted by Hardiksingh Tadiyal 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

When dust particles enter our nostril, it triggers a message to the brain. The brain instructs the nasal chamber to initiate sneezing. This is a method to remove the unwanted dust particles from the nostrils. Sneezing is a type of defense mechanism used by our body.

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How many times will heart bite

Posted by Mumtaz Anwar 6 years, 11 months ago

CBSE > Class 07 > Science

3 answers

Karan Jit 6 years, 11 months ago

A normal human heart rate is 70 to 80 times per minute if our heart beat in a one minute it is called heart rate

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Sudha Gupta 6 years, 11 months ago

72 times per minute... a normal person's heart beat 72 times per minute

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Mumtaz Anwar 6 years, 11 months ago

70 times

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Why is plastic used for making different varieties of objects

Posted by Avni Singh 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Dharmendra Kushwaha 6 years, 11 months ago

Plastic are use to make different varieties because they are very cheap and they are also long lasting

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Avni Singh 6 years, 11 months ago

Most plastics can be easily molded into any shape after heating , they are used for making a variety of objects of different shapes and sizes

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Draw human heart and explain its working

Posted by Jagdeep Kaura 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Dharmendra Kushwaha 6 years, 11 months ago

I can't draw human heart here but I will give you all the working of heart. Heart is a vital organ of human beings. From heart all the blood are pump. In our surrounding the oxygen is present. From there our nose take oxygen and by windpipe (treachea) it is carrying to our hearts. In our heart present of four chamber. The upper two chamber are called left atrium and left atrium and in lower chamber present of left ventricle and right ventricle. From lungs oxygen is carry by plumonary vein into left atrium and from left atrium to left ventricle and from left ventricle. It is carry by main artery to all the cells and in cell the process of respiration occurred which released carbon dioxide. From cell it is carry by main vein to the righ

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Sonia Sharma 6 years, 11 months ago

Heart is an organ which beats continously to act as an pump for transport of blood. It is located in the chest cavity with its lower tip slightly tilted towards the left. Their is a partition between the chambers to avoid.mixing up of blood rich in oxygen and carbon dioxide

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give the word equation of aerobic respiration

Posted by Tables Surve 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Dharmendra Kushwaha 6 years, 11 months ago

Word equation of aerobic respiration Glucose+ oxygen respiration in cell= carbon dioxide+ water+ energy

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Akankshya Nayak 6 years, 11 months ago

I couldn't understand what you had asked ??????

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What is inverted

Posted by Vishal Shende 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

The phenomenon due to which left-hand side of an object appears as right-hand side of the object and vice versa is called lateral inversion.
For example, the word AMBULANCE is painted left-right inverted on the ambulance so that when the driver of a vehicle in front looks into his rear-view mirror, he can make out the word AMBULANCE quickly and give way.

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Whatvis inverted

Posted by Vishal Shende 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Safreen Banu ...?? 6 years, 11 months ago

The right appears as left and left appears as left

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Describe between uniform and non-uniform

Posted by Parnav Sharma 6 years, 11 months ago

CBSE > Class 07 > Science

2 answers

Aanya Trivedi 6 years, 11 months ago

Uniform motion- If an object covers equal distance in equal intervals of time then it is said to be in uniform motion. Non Uniform motion- If an object covers unequal distance in equal intervals of time then it is said to be in non uniform motion

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Ravi Chaudhari 6 years, 11 months ago

Uniform means an object moving in the straight direction with a constant speed. Non-uniform means an object doesn't moving in the straight direction

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Describe the sludge

Posted by Parnav Sharma 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

Sludge refers to the residual, semi-solid material left from industrial wastewater, or sewage treatment processes. It can also refer to the settled suspension obtained from conventional drinking water treatment,and numerous other industrial processes.

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Based on transportation and excretion

Posted by Lakshay Bhatiwal 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Dharmendra Kushwaha 6 years, 11 months ago

Transportation is the process in which oxygen, blood, food etc it transported to our cell. Excretion is the process in which release of waste material from our body such as urine, urea, sweat.

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What is friction

Posted by Shivam Raghuvanshi 6 years, 11 months ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 6 years, 11 months ago

Friction is a force that opposes motion between two surfaces that are in contact. Friction occurs because the surface of any object is rough. Even surfaces that flee smooth have microscopic hills and valleys.

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What is average speed

Posted by Vikash Singh 6 years, 11 months ago

CBSE > Class 07 > Science