CBSE > Class 06 > Science (OLD) | CBSE Board | Homework Help

Boiling or disinfecting the water may not make the water safe if it is contaminated with harmful chemicals, including natural metals such as arsenic or lead. The only way to reduce the health risk associated with harmful elements and chemicals is to limit your consumption to smaller quantities or occasional use only.

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Harika Sharma 5 years ago

Natural water is not considered to be safe for drinking as it is full of salt and dust particles . . .

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4 sorting matrials into groups

Posted by Aanandi Radke 5 years ago

CBSE > Class 06 > Science (OLD)

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Difference between shrub and herb

Posted by Soumendra Prasad 5 years ago

CBSE > Class 06 > Science (OLD)

1 answers

Me My Self Nothing 5 years ago

Herbs and shrubs are the different types of plants categorized on the basis of their size and branching pattern. Herbs have soft and unbranched stems, whereas, shrubs have woody, branched and multi stems. Shrubs are often confused with herbs because of their similar characteristics, but shrubs are taller than herbs.

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What is umbra and penumbra

Posted by Abir Hazarika Gungun 5 years ago

CBSE > Class 06 > Science (OLD)

2 answers

Atharv Mishra 5 years ago

When an opaque object is placed between an extended source of light and a screen, we obtain, on the screen, a shadow consisting of two parts, an inner part which is perfectly dark and called Umbra and an outer part called Penumbra which is partly illuminated.

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Suryansh Kumar 5 years ago

During an eclipse, two shadows are cast. The first is called the umbra (UM bruh). ... It is the dark center of the eclipse shadow. The second shadow is called the penumbra (pe NUM bruh). The penumbra gets larger as it goes away from the sun.

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Which animal has longest lifespan

Posted by Abhay Nare 5 years ago

CBSE > Class 06 > Science (OLD)

5 answers

Abhishek Rajkumar 5 years ago

Giant tortoise

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Dp Sahu 5 years ago

Jaili fish

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Lav Hinduja 5 years ago

Turtle,wale, parrot,asian elephand

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Yummy Chocolate 5 years ago

Asian elephant

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Ashi Raghuwanshi 5 years ago

Turtle

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The nutrients which mainly give energy to body

Posted by Sadik Dhavalagi 5 years ago

CBSE > Class 06 > Science (OLD)

5 answers

Sunny Rahaman 5 years ago

Carbohydrates and fat

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Pratyush Nayak 5 years ago

Carbohydrate and fat

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Yashasvi Priya 5 years ago

What is meant by chlorophyl

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Shreyansh Jaiswal 5 years ago

Fats

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Sadik Dhavalagi 5 years ago

Proteins

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Burning of candle is a physical or chemical change

Posted by Yashita . 5 years ago

CBSE > Class 06 > Science (OLD)

5 answers

Sunny Rahaman 5 years ago

Physical change

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Pratyush Nayak 5 years ago

Chemical change

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Shashank G Patil 5 years ago

Physical change

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Samiksha Yadav 5 years ago

Physical cgange

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Eashani Jindal 5 years ago

Physical

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blood cells are produced in the____________

Posted by Sivananda Sudhi 5 years ago

CBSE > Class 06 > Science (OLD)

5 answers

Sivananda Sudhi 5 years ago

Thanks

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Robin Chander 5 years ago

Red bone marrow

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Samiksha Yadav 5 years ago

In red bone marrow

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Yashita . 5 years ago

In red bone marrow

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??Atreyee Datta?? 5 years ago

BLOOD CELLS ARE PRODUCED IN THE RED BONE MARROW .

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Chapter 12 ka back exercise or ques / ans

Posted by Umesh Negi 5 years ago

CBSE > Class 06 > Science (OLD)

1 answers

Vasudha Sharma 5 years ago

Science lesson number 7 question number 6 class 6th

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What is responsible for Air Pollution?

Posted by Aarya Sharma 5 years ago

CBSE > Class 06 > Science (OLD)

3 answers

Niharika Girish 5 years ago

Humans

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Sahil Khan 5 years ago

Human

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Rishabh Bhandari 5 years ago

Human beings

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What is the habitat of animals like camel and plants like cactus

Posted by Bhavika Bhonar 5 years ago

CBSE > Class 06 > Science (OLD)

3 answers

Macharla Hiranmayi 5 years ago

Terrestrial habitat

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Shashank Sm 5 years ago

The animals like camel and plants like cactus is desert habitat

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Prathmesh Kajari 5 years ago

A cactus plant and camel live in a dry land called desert. So we can say that cactus and camel live in a terrestrial habitat (called desert).

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What happen to the crokre whan we switch on the light in the kitchen

Posted by Kartik Singh 5 years ago

CBSE > Class 06 > Science (OLD)

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What happens to cokraher when we switch on the light in the kitchen

Posted by Kartik Singh 5 years ago

CBSE > Class 06 > Science (OLD)

1 answers

Kartik Singh 5 years ago

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what is difference between series circuits and parallel circuits

Posted by ☆ Taniskasree ☆ 5 years ago

CBSE > Class 06 > Science (OLD)

3 answers

Prathmesh Kajari 5 years ago

PARALLEL CIRCUIT the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each component. SERIES CIRCUIT every device must function for the circuit to be complete. If one bulb burns out in a series circuit, the entire circuit is broken.

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Hardik Kumar 24 5 years ago

In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each componen

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Ram Gurjar 5 years ago

Chapter 9 question and answer

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Whether all matter conduct electricity?

Posted by ☆ Taniskasree ☆ 5 years ago

CBSE > Class 06 > Science (OLD)

1 answers

Aarya Sharma 5 years ago

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Find any 2 water plants we eat as food

Posted by Indhu Vardhan 5 years ago

CBSE > Class 06 > Science (OLD)

3 answers

Niharika Girish 5 years ago

1.Cranberry 2. Water Chestnut and more

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Kartik Singh 5 years ago

1.watercress 2.water caltrop

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Prathmesh Kajari 5 years ago

1.watercress 2.water caltrop

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I want question and answers of science class 6 chapter 10

Posted by Akalka Sreejith 5 years ago

CBSE > Class 06 > Science (OLD)

2 answers

Raja Pandit 5 years ago

Hai

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Lalithambika Lalithambika 5 years ago

Question 1. Give two examples each of modes of transport used on land, water and air. Answer: On Land In Water In Air Car, Train Boat, Ship Aeroplace, Helicopter Question 2. Fill in the blanks: (i) One meter is -------- cm. (ii) Five kilometer is ----------- m. (iii) Motion of a child on a swing is ------------. (iv) Motion of the needle of a swing machine is ----------------. (v) Motion of a wheel of a bicycle is -------------. Answer: (i) One meter is 100 cm. (ii) Five kilometer is 5000 m. (iii) Motion of a child on a swing is Oscillatory motion. (iv) Motion of the needle of a swing machine is periodic motion. (v) Motion of a wheel of a bicycle is circular motion Question 3. Why can a pace or footstep not be used as a standard unit of length? Answer: We cannot use pace or a footstep as standard unit of length as the size of foot and the footstep will not be the same for every individual. Thus, the measurement will not be same for different people. Question 4. Arrange the following lengths in their increasing magnitude. 1metre, 1 centimetre, 1 kilometre, 1 milimetre. Answer: 1 millimetre, 1 centimetre, 1 metre, 1 kilometre. Question 5. The height of a person is 1.65 m. express it into cm and mm. Answer: 1.65 m = 1.65 X 100 cm = 165 cm. ( 1 m = 100 cm) 1.65 m = 165 cm = 165 X 10 mm = 1650 mm ( 1cm = 10 mm) Question 6. The distance between Radha’s home and her school is 3250 m. express this distance into km. Answer: 3250 m = 3250/1000 km = 3.250 km ( 1 m = 1/1000 km) Question 7. While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end 33.1 cm. What is the length of the needle? Answer: Length of needle = final reading - Initial reading = 33.1 cm – 3.0 cm = 30.1 cm. Question 8. Write the similarities and differences between the motion of a bicycle and ceiling fan that has been switched on. Answer: Similarities: - Wheel of a bicycle and ceiling fan both shows circular motion. Differences: - Cycle moves in rectilinear motion but ceiling fan does not move in rectilinear motion. Question 9. Why could you not use an elastic measuring tape to measure distance? What would be some of the problems you would meet in telling someone about a distance you measured with an elastic tape? Answer: Elastic tap will not give accurate measurement because it stretches in length and reduces in size when not stretched. While telling the measurement taken with an elastic tape. We have to tell whether the tape was stretched and by how much. This is very difficult. Question 10. Give two examples of periodic motion. Answer: Example of periodic motion- (i)Pendulum (ii)Child on the swing.

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Please send chapter 13. Notes please

Posted by Hitakshi Mathur 5 years ago

CBSE > Class 06 > Science (OLD)

2 answers

Harsh Pandey 5 years ago

Whic subject

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Kashish Chaudhry 5 years ago

What is Magnet? Objects, which attract magnetic materials like cobalt, nickel and iron are called as a magnet. The ancient, elderly, Greek shepherd was the first person to discover mineral. It is a naturally occurring mineral called magnetite. Therefore, this naturally occurring mineral – magnet was named by the discoverer’s name. The magnets, obtained naturally from a Magnetite rock, are called as the natural magnets and those magnets prepared by the combination of certain mineral ores are called as the artificial magnets. Magnetic Materials: Cobalt, nickel and iron are some examples of Magnetic Materials. These materials easily attract a magnet. Non-magnetic Materials: Aluminium, zinc, wood, and rubber are called the Non-magnetic Materials, as these materials are not attracted towards the magnet even when they are brought closer to the magnets. To know more about Magnet, visit the link Types of Magnets There are different types of magnets and are classified based on their shapes. The different types of magnets include – bar magnet, dumb-bell shaped magnet, horseshoe magnet, cylindrical magnet, etc. Magnetic compass The magnetic compass is a simple device, which has been used from the ancient times by the sailors and other travellers to find directions. A magnetic compass is composed of a small box with a glass top and a magnetic needle, which moves and indicates the directions. Introduction Magnet and magnetite Substances that attract materials like iron, nickel etc. Magnets occur naturally as a particular type of rock. This rock is called magnetite. Discovery of Magnets Greeks used the term magnet in six hundred B.C. for the mysterious stone that seemed to attract iron and other materials. It was first discovered by a Greek shepherd named Magnes (hence the terminology), when his stick that had an iron end got stuck to a rock. To know more about Discovery of Magnets, visit the link below; Discovery of Magnets Magnetic and non-magnetic materials Materials that get attracted towards a magnet are called magnetic materials. E.g. iron, cobalt or nickel. Materials that do not get attracted by a magnet are nonmagnetic materials. E.g. wood, plastic etc. Poles of a Magnet Every magnet is bipolar, i.e. they have 2 poles at the extremities. This can be seen by spreading iron filings around a magnet. These filings arrange themselves in a pattern which is mostly dense towards the two ends of a magnet. These poles are called North and South poles of a magnet. To know more about Magnetic Poles, visit here. How to Find Your Way Using a Magnet Magnetic poles of the Earth Earth has 2 geographic poles, north and south poles. They are the Arctic (South pole of the earth’s magnet) and Antarctica (North Pole of the earth’s magnet). Earth’s magnetic poles are near but not exactly in the same place as the geographic poles. A magnetic compass aligns itself towards the magnetic north pole of the earth. To know more about Earth’s Magnetism, visit here. Using magnets to find directions When a bar magnet is suspended freely by a thread, it aligns Can You Make Your Own Magnet? Making a magnet The magnetic material can be made into a magnet by rubbing a magnet on the surface of the magnetic material. This creates an influence, where the particles inside the material align themselves like the poles of a magnet. Microscopic cause of magnetism Each particle in a magnetic material behaves somewhat like a bar magnet. They are normally aligned randomly within the material. But under the influence of a stronger magnet, they realign themselves according to the stronger magnet’s field. Loss of magnetic property The magnetic property of a magnet is lost on: Heating Hammering or hitting Dropping Do Opposites Really Attract? Attraction and Repulsion between Magnets Like poles repel each other, while unlike poles attract each other.

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What is a movement

Posted by Girlish Kumar 5 years ago

CBSE > Class 06 > Science (OLD)