food & its components
food provides _______ & protects from _______
nutrients , diseases
name the types of methods of separation
handpicking
winnowing
threshing
sieving
filtration & sedimentation
what is light ?
Light is a form of energy which helps us in seeing objects.
name the types of motions
1. random motion
2. rectilinear motion
3. periodic motion
4. circular motion
5. rotational motion
what is electricity ?
Electricity is a powerful form of energy. All the devices which run by electricity have an electric current flow through them.
what are the different sources of food ?
Plant & animal source
if you separate black grapes from green ones from a mixture of the two. is an example for
hand picking
Name any 5 sources of light.
sun
bulb
candle
moon
lamp
what is motion ? give an example
Movement
or
moving from one place to another
example : walking
name any 6 appliances which run through electricity.
fan
fridge
washing machine
guesser
mixer
oven , etc
Name the classification of animals .
1. herbivores
2. carnivores
3. omnivores
which method is used during the harvesting of crops
threshing
Explain luminous & non luminous objects with an example
objects that can emit light energy by themselves are known as luminous objects. ex: sun
Objects that cannot emit light energy by themselves are known as non-luminous objects. ex: Moon
explain random & rectilinear motion with an example.
Motion having no specific path but undergoes sudden change in its motion is called random motion. ex: clouds moving
Motion which undergoes straight line is called rectilinear motion
ex: soldiers in a line
name the 2 terminals of the battery
positive terminal
negative terminal
name the different types of nutrients and its categories.
1. Micro nutrients --> carbohydrates , fats
2. Macro nutrients --> vitamins , minerals & proteins
explain filtration ?
The most common method of separating a liquid from an insoluble solid is the filtration . Take, for example, the mixture of sand and water. Filtration is used here to remove solid particles from the liquid.
How can we see the object ?
When light falls on an object, some of the light gets reflected to our eyes only then we can see the object
explain circular & rotational motion with an example
earth moving around a sun - circular
movement of wheel - rotational
what is wire & switch ?
wire is a type of conductor
switch is a device that interrupts the electron flow in a circuit
Name few plant sources & animal sources with an example
plant sources
roots - carrot, ginger, beetroot
stem : coriander, potato
leaves : cabbage, spinach
fruit : tomato, apple
flower: cauliflower, broccoli
animal source
meat - chicken . mutton
milk- cow, buffalo
egg: hen
milk product : butter, ghee, panner
explain sedimentation with an example.
Sedimentation is a process by which heavier impurities present in liquid normally water settle down at the bottom of the container containing the mixture. The process takes some amount of time.
Name 2 luminous & non- luminous Objects
sun ,thunderstorm - luminous
moon, torch, lamp - non - luminous
explain all types of motion with an example
Random motion
Rectilinear motion
Periodic motion
Circular motion
Rotational motion
explain electric circuit.
An electric circuit is a closed path in which electrons move to produce electric currents.