NOTES: NEW OXFORD PRIMARY SCIENCE LEVEL3 SECOND EDITION NICHOLAS HORSBURGH

Class:3 SCIENCE-3

U#1 THE FIVE SENSES       P#07-08

A:

Question:1

Make a list of ways in which people protect their eyes?

Answer:

People protect their eye sight by:

a) using glasses

b) having their eyes checked by an eye doctor

c) not reading while lying down

Question:2

What corrects the image of an object seen by the eye?

Answer:

The image of an object seen by the eye is corrected by the brain.

Question:3

What two important functions do the ears perform?

Answer:

The ears;

a) help us to hear.

b) maintain our balance.

Question:4

Why is it dangerous to put any long, sharp object into the ear canal?

Answer:

It is dangerous to put any long, sharp object into the ear.

Question:5

Do all things give off a smell?

Answer:

Almost everything produces odour particles.

Question:6

Why are there fine hairs in the nostrils?

Answer:

The fine hairs in the nostrils filter all kinds of things trying to enter the nose.

Question:7

What happens to Hour sense of smell when you have a cold?

Answer:

Sense of smell becomes weak.

Question:8

In what ways is the sense of smell useful?

Answer:

The sense of smell is useful;

1.in smelling flowers and perfumes.

2.It helps us to identify pollution.

3.in dangers.

4. It helps us to savour our food while it is cooking.

Question:9

How do the taste buds help us enjoy food?

Answer:

Our taste buds send a message to our brain, to tell us which flavours we are tasting.

Question:10

What are the different kinds of tastes?

Answer:

The different kinds of taste are sweet, salty, sour, and bitte

Question:11

Can you touch your nose with the tip of Hour tongue?

Answer:

Some people can do all sorts of things with their tongue—twist it round, roll it back, curl it, and even touch their nose with it.

Question:12

Is the top layer of the skin dead or alive?

Answer:

The top layer of the skin is alive.

Question:13

What are receptors? What job do they do?

Answer:

Receptors are tiny blood vessels and nerves. They relay information to the brain about the things our body comes into contact with.

 

B: SELECT THE CORRECT ANSWER FROM THE CHOICES LISTED.

  1. The taste buds help us to recognize                                                   a) shapes         b)flavours   c) healthy food
  2. The eyes lie in sockets in the                                                                              a) joints         b)nostrils         c) skull
  3. Our ——————— gets message from our sences to tell us what we see, smell, taste, heari,feel                                                                                a)heart           b)brain         c) stomach
  4. The five senses————————–                                                                                                                                                                                                                                                                                                                                                                                                                                                                             a) sight, hearing, taste, touch, and smell       b)bones,muscles, brain,heart and hands         c) reading, maths, spelling, running and writing

Ans: (1-b) (2-c)(3-b)(4-a)

 

Unit:2 FOOD CHAINS                 page:14

 

I: COMPLETE THE FOLLOWING SENTENCES:

  • Decomposers feed on ————————————
  • Only producers can make ——————————-
  • Consumers are those living things that cannot ——————————-
  • A food chain shows —————————————

Answers: (a-dead bodies of animals and plants )                                         (b- their own food)                                                                                       (c- produce their own food)                                                                                       (d-how all living things depend upon each other )

 

2: READ THE FOOD CHAIN BELOW.

cabbage88caterpillar88sparrow88eagle

Which of the above is a producer and which are consumers?

Answer: CABBAGE is producer      

CATERPILLAR ,SPARROW AND EAGLE are consumers                                                                                                                                                              

 

3 DRAW OR GLUE A PICTURE OF A HERBIVORE, A CARNIVORE AND AN OMNIVORE IN YOUR BOOK. WRITE A SENTENCE ABOUT WHAT THEY EAT.

 

 

 

 

 

 

 

 

 

4 Which is the correct food chain?

  • grass8 deer8 lion
  • lion8 grass 8deer
  • deer8 lion8grass

answer: (a)

  1. Which animal might complete this food chain?

lettuce 8         _____________     8bird8fox

Answer: caterpiller

 

 

Unit:3 INSECTS                               Page:18

 

 

Question:1

Explain one difference between the honeybee and the locust?

Answer:

The honeybee is of use to us as it provides us with honey, and helps to pollinate flowers. The locust is a pest. It destroys plants and crops.

Question:2

What is the difference between an insect and a bird?

Answer:

An insect has three pairs of legs, while a bird has a single pair of legs. Insects do not have bones, while a bird has light and hollow bones that allow it to fly.

Question:3

The human body is supported and protected by the skeleton. What protects and supports an insect’s body?

Answer:

An insect’s body is supported and protected by a hard covering called chitin.

 

4 Fill in the blanks using words from the box below.

 

Wings,    colony,     chitin ,   kinds,     diseases,  bones,   locusts

 

  • Species of insects means—————of insects.
  • Most insects have——————–attached to them that help them to fly.
  • A———————is a large group of insects living together.
  • Insects such as ———————can destroy crops.
  • Flies and mosquitoes can cause—————————
  • Insects do not have——————-, but are covered and

supported by——————–

Answers: a) kinds b) wings c) colony d) locusts e) diseases f) bones g)chitin

 

5: Make a fact file on insects like the one below

What insects have Some common insects Insects causing harm Insect diet

 

6:LABEL THE PARTS OF THE INSECT SHOWN ON THE DRAWING:

 

 

UNIT:4 WHAT PLANTS PRODUCE Page:25

 

1: MATCH THE FOLLOWING:

 

COLUMN-A COLUMN-B
1.Tomato

2.Carrot

3.Pea

4.Lettuce

5.cauliflower

a.Root

b.Leaf Bud

c.Flower bud

d.Seed

e.fruit

Answer:(1-e)           (2-a)       (3-d)         (4-b)         (5-c)

 

Question:2

Why are the tomato and chilli both considered to be fruits?

Answer:

Tomato and chilli are considered to be fruits because they contain seeds.

Question:3

In a table write one example for each of the following:

leaf bud , leaf, root, stem, tuber, flower bud, seed, fruit and bulb.

ANSWER:

1. leaf bud lettuce

2.leaf spinach

3.root turnip

4.stem sugar cane

5. tuber potato

6.flower bud cauliflower

7.seed peas

8.fruit tomato

9.bulb onion

 

 

4: Fill in the blanks using the correct word from the brackets.

  1. ———————-make food for the plant.

(FLOWERS, LEAVES)

  • Roots absorb—————–

(SOIL, WATER)

  • Stems move water and nutrients to the——————

(SEEDS, LEAVES)

d)Fruits grow from—————————————(STEM, FLOWERS) and contain————————— . (SEEDS, ROOTS)

  • Answers: a) Leaves b) water c) leaves d) flowers, seeds

 

 

UNIT:5 Life cycle of plants             page:29

 

1 FILL IN EACH BLANK USING THE CORRECT WORD FROM THE BOX.

 

Wind, animals, germinates, water, seed, fruit ,Sun
  • Every plant starts life as a —————-
  • A seed———————when it begins to grow into a plant.
  • The seed is inside the plant’s—————–
  • Seeds are spread by the ———————–and ———————
  • Plants make their own food using energy from the ————————–

ANSWERS:

  1. a) seed b) germinates c) fruit d) wind, water, and animals e) Sun

 

Question:2

How does PHOTOSYNTHESIS help plants?

Answer:

Photosynthesis helps plants to make their own food, using sunlight, water, carbon dioxide and chlorophyll.

Question:3

Explain the functions of roots and leaves.

Answer:

Roots help to hold the plant firmly in the soil. Also, they absorb water and nutrients from the soil. In many plants, they store food.

Question:4

How do some animals help plants?

Answer:

Some animals, for example birds, bees and squirrels, help plants in the dispersal of their seeds.

5   ORDER THE STEPS OF THE LIFE CYCLE OF A PLANT BY NUMBERING THEM CORRECTLY.

The plant flowers.

The fruit releases seeds.

The plant grows.

A new life cycle begins.

The flower produces fruits.

The seed germinates.

Answers:( iii)+ (v)+ (ii)+( vi)+( iv)+(i)

 

Unit:6 Materials                       Page:35,36

 

A: What am I?

  1. I am made from chemicals and do not conduct electricity.—————-
  2. I am made from wood and can burn easily.—————-
  3. I am strong and can be changed into any shape by hammering.—————
  4. I am transparent and can break easily.—————-
  5. I am a thread used to weave cloth.——————

Answers:A1.Plastic 2. Paper   3. Metal 4. Glass 5. Fibre

 

B: Name the term for:

 

  1. materials that are not found naturally but are made from chemicals —-
  2. strong, hard, and shiny materials that can be hammered into different shapes without breaking———————
  3. materials through which heat can travel easily
  4. materials that are attracted to magnets—————–
  5. material that is difficult to scratch——————-
  6. material that is easy to bend——————-

7.material that is very difficult to break———————-

8.material that does not let water pass through————————–

  1. long,thin threads of material, like hair———————————-

10.any material through which electricity can travel easily——————–

Answers: B 1. Plastics 2. Metals 3. Conductors of heat

  1. Magnetic 5. Strong and hard 6. Flexible 7. Strong and hard
  2. Waterproof 9. Fibres 10. Metal

 

Unit:7 The solar system                 Page:42

 

A: ANSWER THE FOLLOWING:

 

Question:1

List the different objects in space with an example of each one.

Answer: stars (example: Sun),

planets (example: any of the eight planets),

dwarf planet (example: Pluto; Eris and Ceres are some other dwarf planets present in the solar system;)

natural satellite (example: moon).

Question:2

Think and write about how the Earth is different from the other planets.

Answer:

Earth has a moderate temperature allowing the survival of living organisms. It has water, air and seasons.

Question:3

Order the eight planets according to their distance from the Sun?

Answer:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Question:4

How is a planet different from a moon?

In what way is a moon similar to a planet?

Answer: Difference:

A planet is an object that circles the Sun, while a moon is an object that circles a planet.

Similarity:

Both a moon and a planet have no light of their own, but reflect the Sun’s light.

 

B:NAME THE FOLLOWING:

 

1.The coldest planet of the solar system
2.The largest planet of the solar system
3. Scientists who study the space and the objects in it
4. the natural satellite of the Earth
5. one complete turn of the Earth on its axis
6. one complete round of the Earth on its orbit

 

B 1. Neptune 2. Jupiter 3. Astronomers 4. the Moon 5. 24 hours

  1. 365¼ days

 

 

 

Unit:8 Wind and air page:45

 

A:

Question:1 Copy the table below. Compare the differences between space and atmosphere.
Answer:

Atmosphere

• has air and gases

• is able to maintain life on the Earth

• has winds and temperature creating

rain, snowfall, clouds, etc.

Space

• has no air and gases

• is not able to maintain life

• absence of wind and temperature

 

Question:2 How do you think astronauts breathe in space?
Answer: As there is no air in space, astronauts take an oxygen supply with them.
Question:3 We cannot see, taste or smell air, but we can feel it. Explain how?
Answer: By the smoke rising from the chimneys;

by the movement of flags, trees, kites, etc.

Question:4 What is air made of?
Answer: Air is made up of gases – oxygen, nitrogen, carbon dioxide, and water vapour.
Question:5 What do we call air which has been squeezed?
Answer: Compressed air is air that is squeezed into a small space.

 

B: Mark the correct statements with a?and the wrong ones with a x.

  1. Carbon dioxide is the most important gas present in the air.
  2. There is no air in space.
  3. Warm air is heavier than cold air.
  4. Compressed air is present in a tyre.
  5. There is more air higher up in the atmosphere.
  6. Wind is moving air.

Answers: B  (1. 7)   ( 2. 3)     (3. 7)     (4. 3)     (5. 7)     (6. 3)

 

Unit:9 Circuits   page:48,49

1: Fill in each blank using the words in the box.

complete,  conductors,   insulators,  circuit
  • The path through which a current flows is called——————
  • A——————-circuit is needed for an electric current to flow.
  • Materials that allow electricity to pass through them are called———————
  • Materials that do not allow electricity to pass through them are called——————–

Answers: 1. a) circuit b) complete c) conductors d) insulators

 

Question:2 What does the word circuit mean?
Answer: The path along which an electric current flows is called a circuit.

 

Question:3 What is electricity which moves along wires called?
Answer: Electricity that moves along wires is called an electric current.

 

Question:4 Why does flex have a thin layer of plastic on the outside?
Answer: Flex is coated with a thin layer of plastic because plastic is an insulator.

 

5: Mark the correct statements with a ? and the wrong ones with a x.

  1. The filament is the path along which electric current flows.
  2. Metal and water are conductors of electricity.
  3. A gap in the circuit will allow electric current to flow.
  4. A complete circuit allows electric current to flow.

A pencil and a wooden ruler are good conductors of electricity.

Answers: 5: a) 7   b) 4    c) 7   d) 4   e) 7

 

Unit:10 Fun with magnets page:53

 

1:

Question:b) How are magnets useful to us?
Answer: Magnets are useful to us because they are used in telephones, radios, stereos, computers, washing machines, etc.
Question:c) Find out from the Internet how maglev trains work.
Answer: The pupils can search the Internet to find out that like poles on magnets keep the train floating above the tracks. Its top sped is about 280 km/h.

 

2: Fill in each blank with the correct word from the bracket.

1.All magnets have ———————poles. (three/ two)

2.An iron nail is not attracted to a magnet if it is——————- the magnet’s magnetic field. (near to, far from)

3.————————materials are attracted to magnets.

(Some/ All)

4.A magnet’s power is ————————–at the poles.

(strongest/ weakest)

Answers: 2. a) two   b) far from c) some d) strongest

 

Unit:11 Energy  page:58

 

Question:1 a) What is energy?
Answer: Energy is the power to do work.

 

Question:1 b) Where does the energy in our food come from?
Answer:The energy in our food comes from the Sun.

 

Question:1 c) How do we use energy?
Answer: We use energy while working.

 

Question:1 d) Where do machines get energy from?
Answer:Machines get energy from fuels like petrol, diesel, coal, or natural gas.

 

Question:1 e) Give two examples of stored energy.
Answer: Two examples of stored energy: the food we eat, and plants.
Question:2 Do you use natural gas at home? How and where is it used?
Answer: We use natural gas at home in our kitchens to cook food, and in heaters and geysers.

 

 

Unit:12 Force   page:62

 

1:Answer the following questions.

Question:1a) What is a force?
Answer:Force is a push or pull.
Question: 1b) List three different types of forces.
Answer: Three different types of force are:

frictional force,

gravitational force

and magnetic force.

Question: 1c) What can a force do?
Answer: A force can cause objects to change shape change the way they move, or cause an object to move in a new direction. Force can also make a moving object come to a stop. The speed of a moving object can increase or decrease depending upon the amount of force applied to it.
Question: 1d) Objects do not fly up, move backward or forward, but fall down
when you let go of them? Why?
Answer:Objects fall down because of the force of gravity.

3: Fill in the blanks using the correct words/phrases from the brackets.

  1. ———————-is a natural force. (Wind, Electricity)
  2. A horse cart is moving due to force produced by the —————————(cart, horse)
  3. The force of gravity keeps everything firmly——————————(on the ground, in the air)

Answers: 3. a) wind b) horse c) on the ground

Unit:13 Sounds page:65

 

1: Mark the correct statements with a ? and the wrong ones with a X.

  1. Sound waves can travel only through water and other liquids.
  2. High or low sounds mean high or low pitched sounds.
  3. Sound waves travel in one direction.
  4. You can have sound without anything vibrating.
  5. Very loud sounds can damage hearing.
  6. Less vibration creates louder sound.

Answers: 1. a) x b) / c) x d) x e) x f) / g) x

 

Unit 14 Light and shadow page:70

Answers:

  1. a) true b false c) true d) false e) false
Question: 2-a)
Answer: Luminous objects are those objects which give off their own light. Examples: the Sun, a street lamp, a torch, a TV set that is on.
Question: 2-b)
Answer: Light travels in straight lines called rays.
Question: 2-c)
Answer: Light travels faster than sound.
Question: 2-d)
Answer: Shadows are longer in the morning, when the Sun is lower on the horizon, than at midday.

 

Question: 2-e)
Answer: As the Sun is the biggest source of light, it gives off more energy in one second than the total energy ever used on the Earth.

 

Question: 2-f)
Answer:

Transparent materials are those materials through which light can pass easily, e.g., glass.

Translucent materials are those materials through which only a little light can pass, e.g. tissue paper.

Opaque objects do not allow light rays to pass through them, e.g., a book.

 

 

 

 

 

 

2 comments

  • Mushtaque Ahmed

    Thanks Dear, I got a lot of help from this page while teaching my Son. What about level 4 Oxford Science?

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.