Electricity and circuits
What is an electric circuit?
An electric circuit is a closed path through where electric current flows
What is the filtration?
Filtration is the process of filtering the water using a filter paper.
Explain transparent in a short sentence..
It is where light can pass through and we can see through it
Why do we need water?
To bathe, to survive, to drink, to cook, to brush, for animals and plants
How many poles does a magnet have?
2
What are the 2 types of electric circuits?
Open and closed circuit
How can you separate salt from water
Evaporation
What are the 3 types of transparency?
Opaque, transluscent and transparent
What is transpiration?
The exhalation of water vapour through the stomata.
Artificial magnets are made in different shapes such as __________, __________ and ____________.
Bar, horseshoe and cylinder
How many terminals are there in an electric cell
2
What is winnowing? Where is it used?
he method of separating the components from a mixture. In this method, heavier and lighter components of a mixture are separated by wind or by blowing air. This method is used to separate grains from husk.
Name five objects which can be made from wood.
Just in case anything goes wrong:-
a) Table
b) Chair
c) Doors
d) Desk
e) Box
Take out a cooled bottle of water from the refrigerator and keep it on a table. After some time you notice droplets of water around it. Why?
Because the surface of the air around the bottle cool down and air condenses around the bottle.
Write any two properties of a magnet.
Will the bulb glow in the following diagram?
Yes
How will you separate husk or dirt particles from a given sample of pulses before cooking?
Husk and dirt particles are separated from pulses by handpicking.
Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt
Glass bowl, steel spoon
How are clouds formed?
The process of condensation plays an important role in bringing water back to the surface of the earth. As we go higher from the surface of the earth, it gets cooler. When the air moves up, it gets cooler and cooler. At sufficient heights, the air becomes so cool that the water vapor present in it condenses to form tiny drops of water called droplets. It is these tiny droplets that remain floating in the air and appear to us like clouds.
How is a compass used to find directions?
A compass always shows north and south direction, by keeping this as a reference we can always find east and west directions also.
Why do electricians use rubber gloves while repairing switches?
Electricians use rubber gloves while repairing switches because, rubber is an insulator. Insulators don't allow electricity to pass through them.
There is a beaker with unwanted impurities and dirt.
Explain the process of making the water pure.
Sedimentation
Decantation
Filtration
Boiling ( Just to purify the water fully )
Given below are the names of some objects and materials:
Water, basketball, orange, sugar, globe, apple and earthen pitcher. Group them as:
(a) Round shaped and other shapes (b) Eatables and non-eatables
Round shaped- basketball, orange, globe, apple,
Other shapes- earthen pitcher
b) Eatables- Orange, Sugar, apple
Non-eatables- basketball, earthen pitcher, globe, water
Explain the water cycle
Evaporation
Condensation
Precipitation
Collection/ runoff
Transpiration
You are given an iron strip. How will you make it into a magnet?
Take a bar magnet and keep in contact with one of its poles with one edge of the bar of iron.