CBSE > Class 07 > Science | CBSE Board | Homework Help

The urinary bladder is a hollow muscular organ in humans and some other animals that collects and stores urine from the kidney before the disposal of unination

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Dîby@Jït D@S 4&4 7 years ago

Urine exit bladder into the urethra , which carries urine out from the body.

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Dîby@Jït D@S 4&4 7 years ago

And travels down two tubes are called ureter to the bladder. Urinary

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Dîby@Jït D@S 4&4 7 years ago

The urinary bladder is muscular sac in the pelvis, just about and behind the pubic bone. When empty, the bladder is above size and shape of a pear. Urine is made in kindey

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Saransh Pandit The King 7 years ago

A place where urine are store

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Yogita Ingle 7 years ago

The urinary bladder is a hollow elastic organ that functions as the body's urine storage tank. Urine produced by the kidneys flows through the ureters to the urinary bladder, where is it stored before passing into the urethra and exiting the body.

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Ch 10 keyword

Posted by Adirya Kumar 7 years ago

CBSE > Class 07 > Science

0 answers

ANSWER

Defination of Dialysis

Posted by Vishal Verma 7 years ago

CBSE > Class 07 > Science

2 answers

Dîby@Jït D@S 4&4 7 years ago

i am not like yogita. I am telling in short and easy process Dialysis- The blood of a person having kidney failure can be cleaned regularly by using a dialysis machine. The process used for cleaning the blood of a person by separating the waste substance is called dialysis.

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Yogita Ingle 7 years ago

Dialysis is the artificial process of eliminating waste (diffusion) and unwanted water (ultrafiltration) from the blood. Our kidneys do this naturally. Some people, however, may have failed or damaged kidneys which cannot carry out the function properly - they may need dialysis.
Dialysis is an artificial process used for filtering blood in the human body. This treatment is introduced to a patient when their kidneys can no longer perform this function. It helps to get rid of the body’s metabolic wastes and controls the blood pressure.

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How does the bulb glow ?

Posted by Santhosh Kumar Jha 7 years ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years ago

The bulb has two thick contact wires in the center with a thin wire attached between them. This thin wire is called filament.
One of the thick wires is connected to the metal case at the base of the bulb and the other is connected to the metal tip at the center of the base. These two form the terminals.
When electricity is passed through the terminals of the bulb, the filament gets heated up and produces light.
A bulb is said to be fused if the filament gets broken. Fused bulb doesn’t glow.
The two terminals do not directly touch each other to avoid short circuit.

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Can anyone explain me erect image and if it is different from visual image

Posted by Mrudula Tayade 7 years ago

CBSE > Class 07 > Science

4 answers

Saanvi Tripathi 7 years ago

Tumhe answer batana h ya sab ka name puchna h

1Thank You

Mrudula Tayade 7 years ago

My name is Mrudula .Why?

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Kishan Rai 7 years ago

Who are you what is your name please send me

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Kishan Rai 7 years ago

Science

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ANSWER

Explain the mechanism of breathing in detail with diagram

Posted by Lapita Jena 7 years ago

CBSE > Class 07 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

We take in air through our nostrils. When we inhale air, it passes through our nostrils into the nasal cavity. From the nasal cavity, the air reaches our lungs through the trachea. Lungs are present in the chest cavity. This cavity is surrounded by ribs on the sides. A large, muscular sheet called diaphragm forms the floor of the chest cavity.

Breathing involves the movement of the diaphragm and the rib cage. Breathing involves two steps:

During inhalation, ribs move up and outwards and diaphragm moves down. This movement increases space in our chest cavity and air rushes into the lungs. The lungs get filled with air. The muscles between the ribs contract causing the rib cage to move upward and outward.

During exhalation, ribs move down and inwards, while diaphragm moves up to its former position. This reduces the size of the chest cavity and air is pushed out of the lungs. As the chest cavity becomes smaller air is pushed out from the lungs. Take a deep breath. Keep your palm on the abdomen, feel the movement of abdomen.

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Ocean is full of water even then there is scaricity of water?why?

Posted by Madhuri Chaudhari 7 years ago

CBSE > Class 07 > Science

1 answers

Awesome Gamer 5 years, 9 months ago

Because ocean water is salt water and we cannot drink salt water

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ANSWER

Define pollination. Explain the process

Posted by Viraj Barnwal 7 years ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years ago

Pollination: The transfer of pollen grains from anthers to stigma is called pollination. Pollination is of two types, viz. self pollination and cross pollination.

Self Pollination: When anthers of the same flower are transferred to the stigma; it is called self pollination.

Cross Pollination: When anthers from a different flower are transferred to the stigma; it is called cross pollination. The flowers can be on the same plant or on different plants. Cross pollination is the norm in most of the plants. Plants need help from various agents of pollination to carry out cross pollination. Wind, insects, birds and other animals play the role of agent of pollination.

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ANSWER

Class 7 name a plant whose mode of growing is same like rose plant

Posted by Pari Shukla 7 years ago

CBSE > Class 07 > Science

2 answers

Saanvi Tripathi 7 years ago

You are right its ans. is marigold

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Paramita Pal 7 years ago

Marigold

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ANSWER

What is real image ?

Posted by - Aarti 7 years ago

CBSE > Class 07 > Science

2 answers

Yogita Ingle 7 years ago

The image that can be obtained on to the screen is called a real image
A real image can be caught on a screen .
A real image is always inverted .
A real image is formed when the rays of light after reflection or refraction actually meet at some point

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- Aarti 7 years ago

An image which can be obtained on a screen is called a real image.

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ANSWER

Definition of Convex mirror Convex lence

Posted by Kartik Suryavanshi 7 years ago

CBSE > Class 07 > Science

1 answers

Dîby@Jït D@S 4&4 7 years ago

Convex mirror is image formed by a convex mirror is erect, virtual and the smaller in size than the object. Convex lens is formed by a convex lens is real is real and inverted. When the object is placed very close to the lens, the image formed is virtual,erect and magnified.

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ANSWER

What is a virtual image

Posted by Niharika Sahu 7 years ago

CBSE > Class 07 > Science

3 answers

Akankshya Nayak 7 years ago

The image formed by a plane mirror could not be obtained on a screen. Such an image is called a virtual image.

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Khushi Taliyan 7 years ago

Virtual image cannot be obtained on a screen.

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Arya Patel 7 years ago

The virtual meaning is that we cannot take on a screen

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ANSWER

Describe the stomach

Posted by Akankshya Nayak 7 years ago

CBSE > Class 07 > Science

2 answers

Vijay Gupta 7 years ago

Stomach is a flattened j shaped organ present in alimentary canal . It contains hcl which can kill many bacteria which comes in stomach along food . It also secrets pepsin and mucus .

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Arya Patel 7 years ago

Stomach contains HCL (hydrochloric acid) when food enter in stomach so the HCL is produce to kill the germs and absorbed the food

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ANSWER

stomach shape look like a flattened J or U. Choose the correct one.

Posted by Akankshya Nayak 7 years ago

CBSE > Class 07 > Science

1 answers

Dîby@Jït D@S 4&4 7 years ago

2Thank You

ANSWER

What is si unit of force

Posted by Rishabh Bharti 7 years ago

CBSE > Class 07 > Science

1 answers

Khushi Taliyan 7 years ago

Newton,symbol 'n'

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ANSWER

Science means what

Posted by Sk Zisan 7 years ago

CBSE > Class 07 > Science

1 answers

Dîby@Jït D@S 4&4 7 years ago

Magic

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What causes short circuit

Posted by Aditya Tiwari 7 years ago

CBSE > Class 07 > Science

4 answers

Rishav Shaw 6 years, 11 months ago

Photosynthesis is the process by which plants make their food

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Lavanya Chopra 7 years ago

The process by which plant's make their own food is known as photosynthesis

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Yogita Ingle 7 years ago

Faulty Insulation: Old or damaged insulation allows neutral and live wires to touch, which can cause a short circuit. Nail and screw punctures as well as age can cause wire casings or insulation to deteriorate and allow short circuits.
Loose Connections: Attachments can loosen, sometimes allowing neutral and live wires to touch. Fixing faulty wire connections is difficult and sometimes requires working with live wires.
Appliances: Old or broken appliances can develop shorts over time. Short circuits in appliances can occur in the plugs, in the power cords or inside the device. It’s best to have a technician look at shorts in larger appliances like ovens and dishwashers.

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Anshika. Sanu Shukla 5 years, 9 months ago

What is photosyntesis

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ANSWER

Name a device which work on the principal of magnetic effect of electric current

Posted by Aditya Tiwari 7 years ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years ago

Electric motor work on the principle of magnetic effect. it convert electrical energy to mechanical energy.
Devices that work on the basis of magnetic effect of electric current are electric bell, crane, and loudspeaker.

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ANSWER

Why electromagnet is very strong?

Posted by - Aarti 7 years ago

CBSE > Class 07 > Science

2 answers

Arya Patel 7 years ago

Electro magnetic is very strong beca of currents flow on it that creates the force to the metallic things which will attract magnet quickly and stronger

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- Aarti 5 years, 9 months ago

Electromagnet is very strong because of electric current.

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ANSWER

What is time priod

Posted by Janvi? Pal 7 years ago

CBSE > Class 07 > Science

3 answers

Akankshya Nayak 7 years ago

Time taken by the pendulum to complete one oscillation is called its time period.

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Shreya Mittal 7 years ago

The time taken by a pendulum to complete its one oscillation is known as time period

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Dîby@Jït D@S 4&4 7 years ago

Time period is the time needed for one complete cycle of vibration of pass in given point it's called time period

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How does a spore form

Posted by Sudipta Pandit 7 years ago

CBSE > Class 07 > Science

2 answers

- Aarti 7 years ago

Spores are formed by bread fungus called bread mould

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Siddhant Nawale 7 years ago

Very simple

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ANSWER

Why the rainbow have 7 colour

Posted by Nidhi. Bundel 7 years ago

CBSE > Class 07 > Science

1 answers

Yogita Ingle 7 years ago

The rainbow is caused by the refraction (breaking up) of light into an infinite number of colors, not just seven. It does present all other colors, but the human eye cannot see and the mind cannot comprehend all of them, so the brain just separates out the main ones and we give them the names we all know: red, orange, yellow, green, blue, indigo, and violet.

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what will become when we add ho2 lafghing gas

Posted by Pvani Loke 7 years ago

CBSE > Class 07 > Science

0 answers

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How do we do percolation rates???formulas..

Posted by Sushanth Koushik 7 years ago

CBSE > Class 07 > Science

1 answers

Kaavya Joshi 7 years ago

Percolation rate (mL/min) = amount of water (mL) / percolation time (min) Example : suppose that for a certain sample, it took 20 minutes for 200 mL to percolate . So, Rate of percolation = 200mL/20min = 10mL/min

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What is called bisexual flower

Posted by Akankshya Nayak 7 years ago

CBSE > Class 07 > Science