Download REINFORCEMENT Grade 3 EVS FOR SA2

REINFORCEMENT EVS FOR SA2
L-6 OUR ENVIRONMENT
1. Fill in the blanks. (a) The term ___________________ refers to our surroundings.
(b) Ask your parents to get a ___________________ check done on their vehicle.
(c) Vegetables and fruit peels can be used to prepare ___________________.
(d) ___________________ is one of the non-living component of the environment.
2. Write T for true and F for false (a) Air pollution does not harm living things. _____
(b) Avoid bursting crackers since smoke is harmful. _____
(c) We must enjoy playing loud music at parties even if it is disturbing the neighbours. _____
(d) We must take a small portion of food in our plate to avoid wastage. _____
3. Answer the following. (a) What is land pollution?
(b) How does contamination of soil affect the human and animal life?
(c) Give three ways to prevent noise pollution.
Write 1 to 6 in brief and 7 to 10 in detail.
1. Name the three Rs of conservation.
2. Give a few ways to prevent land pollution.
3. Name three living components of the environment.
4. What are pollutants?
5. What is water pollution?
6. How can noise pollution affect our health?
7. How can we reduce wastage? Give two examples.
8. How does air pollution affect our health?
9. How can we prevent water pollution?
10. Give three causes of noise pollution?
L-9 PLANTS AROUND US
1. Fill in the blanks.
(a) The plant has two main parts, the and the root.
(b) The thin tube in the middle of a leaf is called the ..
(c) The process by which a seed grows into a sapling is known as ..
(d) grow into fruits.
2. Write T for True and F for False.
(a) Leaves of water lilies are needle-shaped.
(b) Petals are the colourful and attractive parts of a flower.
(c) Shoot is a part of a plant that grows underground.
(d) Flowers of different plants have different sizes and shapes.
3. Answer the following.
(a) What is a receptacle?
(b) Describe the veins of a leaf and state their functions.
(c) Write a short note on taproots.
Answer 1 to 6 in brief and 7 to 10 in detail.
1. Give two examples of plants that have fibrous root.
2. What is the green-coloured pigment present in plant called?
3. What are stomata?
4. Which part of a flower is attractive?
5. What are saplings?
6. What is germination?
7. Define photosynthesis.
8. Write two functions of stem.
9. Write the differences between a taproot and a fibrous root.
10. Draw and label the parts of a leaf.
L-12SOLIDS, LIQUIDS AND GASES
1. Write T for True and F for False.
(a) All liquids have a fixed shape.
(b) Some objects like cotton can sink and float.
(c) Water, air, stone, plants, animals are all examples of matter.
(d) Three states of matter are solid, liquid and gas.
2. Fill in the blanks.
(a) An orange peel ___________ in water.
(b) A solid has a definite ____________.
(c) On heating, fruit juice changes into ___________________.
(d) Soil and minerals are ______________ materials.
3. Answer the following
(a) List the three different states of matter.
(b) Why are gem stones natural and ornaments artificial thingss
Answer 1 to 6 in brief and 7 to 10 in detail.
1. Name a solid natural thing that floats in water.
2. What is condensation?
3. Do tissue papers, cloth, cotton and sponge float on water.
4. Define matter.
5. Name the three states of matter.
6. Give two examples of natural things that can float.
7. Write short note on ‘gases’.
8. Can water be converted to all three states of matter? Justify your answer.
9 Differentiate between solids and liquids.
L-13 MEANS OF COMMUNICATION
1. Fill in the blanks.
(a) Magazine and __________________ give us news about events that take place in our country and
around the world.
(b) The __________________ help transmit radio and television programmes instantly all very the
world.
(c) Radio and __________________ programmes entertain us and enrich our knowledge.
(d) People in the earlier times did not have __________________ or __________________.
2. Write T for true and F for false .
(a) The letters are collected by a delivery boy from the post box. ______
(b) Computers have made communication easier and so much fun. ______
(c) In earlier times, dried palm leaves were used to record events or write stories. ______
(d) A stamp is pasted on an envelope before posting it. ______
3. Answer the following.
(a) How did people in the olden times sent long messages to far away places?
(b) What is STD’s full form? When do we use this facility?
(c) Write two advantages of having a mobile phone?
Answer 1 to 6 in brief and 7 to 10 in detail.
1. Name any two means of mass communication.
2. What is the full form of ISD? When do we use this facility?
3. For what purpose is the fax machine used?
4. How do we send messages through computers?
5. Who collects the letters from the post box and where does he take them?
7. How are the letters delivered to the correct address.
8. How can we get the news about the events that take place around the world?
9. What are artificial satellites and how do they help us?
10. How are radios and televisions useful to us?
L-14A VISIT TO SPACE
1. Fill in the blanks.
(a) The _______________ is a part of the Milky Way.
(b) Astronauts wear special dresses called _______________.
(c) At night, we see small specks of light called _______________.
(d) Sunita Williams stayed in space for _______________ days
2. Write T for true or F for false.
(a) There are seven planets moving around the sun. ______
(b) There are many galaxies in the universe that are of different shapes and sizes. ______
(c) Laika, a dog was the first animal to be sent to space in 1957. ______
(d) Milky Way is also known as Akash Yamuna. ______
3. Answer the following.
(a) What is a constellation?
(b) What are planets? Name any two planets.
(c) What is astronomy?
Answer 1 to 6 in brief and 7 to 10 in detail.
1. What is a telescope?
2. Who was the first Indian woman to visit the space?
3. Who was the first man to walk on the moon?
4. Which animal was first sent to space?
5. What is a constellation?
6. Who is an astronomer?
7. What is a Milky Way?
8. What is a solar system?
9. What are stars?
10. What are space suits?
L-15LIGHT AND SOUND
1. Fill in the blanks.
(a) Objects such as beds, plates, chairs and bags that do not emit light are called ___________
objects.
(b) The _________________ of an object is formed opposite to the source of light except when the
source of light is directly above the object.
(c) _________________ objects allows some light to pass through them.
(d) _________________ objects allow light to pass through them completely.
2. Write T for true and F for false
(a) A shadow may differ in size and shape. _____
(b) Soft and pleasant sounds are called noise. _____
(c) When an object blocks light, the dark shape is formed on a surface by the object coming
between the light and the surface. _____
(d) Opaque objects allow light to pass through them _____
3. Answer the following.
(a) Mention at least two ways to prevent or reduce noise pollution?
(b) Define luminous objects.
(c) What is noise pollution.
Write 1 to 6 in brief and 7 to 10 in detail.
1. How does light travel?
2. What are opaque objects?
3. How is sound produced?
4. What are luminous objects?
5. What causes sound pollution?
6. When are the shadows of an object formed by the sun, longest and shortest?
7. How does noise pollution affect people living next to the railway station?
8. What are transparent objects? Give two examples of transparent objects.
10. What is a shadow??