Electricity
How is hydro electric power produced?
Hydro electricity is produced by the energy of water
The place which is known as one big magnet
The earth
On what factors does our type of clothing depend?
Type of clothing which we wear is influenced by climate, occupation, culture and daily needs.
When an object is changing its position, it is in _________
Motion
What are the two main sources of food?
Plants and animals
Why is it important that wires in your wall are covered in plastic?
The plastic is an insulator that prevents you from making direct contact
This object has a magnetized needle that points direction
Compass
What is fabric?
Fabric means a woven material, a textile or other material resembling woven cloth.
What is the system used for measurements nowadays.
The S.I system
Define the term ingredients.
The materials that are needed to prepare a particular type of dish are called ingredients.
Name three ways to generate renewable electrical energy.
solar power, wind power, water power
What does the disc on the crane that picks scrap called as
electromagnet
What is spinning?
The process of making yam from fibres is called spinning.
Why a hand cannot be used as the standard unit of length?
Length of hand and cubit are not same for all the people. So these cannot be used as the standard unit of length.
Explain the term herbivores.
Plant eating animals are called herbivores.
Describe two problems with burning fossil fuels to generate electricity.
air pollution, acid rain, carbon dioxide
This term is used when two opposite poles react to each other
Attraction
Name two simple devices used for spinning.
Takli and charka
what kind of scale is used by cloth merchants, tailors, carpenters and mechanics to measure length.
Merchants use iron scale. Tailors use plastic tape and carpenters use both.
Give 5 examples of omnivores.
Humans, crow, cat, bear, duck
Why does your hair stand on end when you rub a ballon it it?
Static electricity is produced
What are poles?
Ends of the magnet where force is the strongest?
Why are cotton and woolen clothes rough and silk, rayon, nylon, polyester smooth to touch?
Roughness of cotton and woolen fiber is due to presence of many folds and uneven surfaces in it. Silk, rayon, nylon and polyester are smooth because they have long plain, fine structure.
How would you measure the length of a unusual item.
Take a thread and trace it around the shape. Then measure the length of the the thread.
Name the nutrients with examples.
Carbohydrates - Banana, rice, bread
Proteins - Fish ,eggs, chicken
Fats - oils, diary products
vitamins and minerals - fruits and vegetables.