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Our Sense Organs And Their Uses (1.1) A. Write the number of the correct answer in the brackets. 1. We know it is bright d...
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Our sense organs and their uses

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Our sense organs and their uses

  1. 1. Our Sense Organs And Their Uses (1.1) A. Write the number of the correct answer in the brackets. 1. We know it is bright during the day because we detect it with our sense of ________. () (1)(2)(3)(4)  touchsighttastesmell 2. Which of the following produces the loudest sound? () (1)(2)(3)(4)  A whisper.A bouncing ball.A gas turbine in operation.A doorbell when pressed. 3. Barry is having a flu and he has no appetite for food. Barry has lost his sense of ________. () (1)(2)(3)(4)  taste and smellsight and tastetaste and touchtouch and smell 4. Our sense of taste cannot tell that the ________. () (1)(2)(3)(4)  pineapple is soursoup is saltyapple is sweetcoconut is hard 5. We know the kettle is hot by ________ it. () (1)(2)(3)(4)   lookingsmellingtouchinglistening B. Write " T" for true and " F" for false. 1. We should touch anything we see because nothing is harmful or poisonous.   () 2. Our skin is the largest organ in our body.   () 3. We can run fast because our senses are working very well.   () 4. We know a knife is sharp by looking at it.   () 5. A heap of rubbish gives off a strong odour.   () C. Fill in the blanks with the most suitable word. 1. Two objects are said to be different if they have different _______________.   2. There are about _______________ taste buds in our tongue.   3. A deaf person has lost his sense of _______________.   4. A piece of sponge can be easily _______________ by hand.   5. Our sense of _______________ allows us to watch and enjoy programmes on television. Living And Non-Living Things (2.1) A. Write the number of the correct answer in the brackets. 1. All things in this world fall into two main categories of ________. () (1)(2)(3)(4)  plants and animalsliving and non-living thingsmetal and non-metaldead or alive 2. Animals reproduce themselves before they die to ________. () (1)(2)(3)(4)  have a familyincrease their numbersproduce non-living thingsavoid becoming extinct 3. A stimulus is a change ________. () (1)(2)(3)(4)  in the surrounding of a living thingfor the betterto bring about movementin the colour of an animal's fur 4. Which group consists of non-living things? () (1)(2)(3)(4)  Furniture, eggs and flowers.Books, bacteria and spider.Furniture, books and glass.Cobweb, plastic and worms. 5. From which living thing do papers come from? () (1)(2)(3)(4)   Sheep.Trees.Flowers.Elephants. B. Write " T" for true and " F" for false. 1. Non-living things do not have the same five senses as human beings.   () 2. One of the reasons plants die is due to diseases.   () 3. Some living things do not need air to live.   () 4. Living things grow old with time.   () 5. Plants cannot respond to changes around them.   () C. Fill in the blanks with the most suitable word. 1. Living things are things that are _______________.   2. Ferns and fungi reproduce from _______________.   3. Without _______________ , _______________ and _______________ , living things will die.   4. A _______________ grows into a dog.   5. Plants need air, _______________ , _______________ , minerals and chlorophyll to produce their own food. Write the number of the correct answer in the brackets. 1. Animals have a covering of skin on their body, the skins on different animals ________. () (1)(2)(3)(4)  are the sameare covered with feathersvary in thickness and textureare always rough 2. The feathers of birds help to ________. () (1)(2)(3)(4)  make them beautifulmake them look aggressivekeep them afloat on waterprotect them and keep them warm 3. Animals move about to:(a) look for shelter.(b) escape from predators.(c) look for food.(d) get away from dangers. () (1)(2)(3)(4)  (a) & (c).(b) & (c).(a), (b) & (c).All of the above. 4. Animals which have wings use their wings to ________. () (1)(2)(3)(4)  fly and glide in the airhop and crawlmake them look biggerfrighten smaller animals 5. Fresh water fishes usually ________ to live in sea water. () (1)(2)(3)(4)   can adapt easilycannot adaptenjoy the changesurvive well B. Write " T" for true and " F" for false. 1. Animals like dogs can be trained to do special tasks.   () 2. The shape of each animal is not unique to its species.   () 3. All mammals have an outer covering of hair on their body.   () 4. Reptiles have scales on their bodies.   () 5. Turtles can live in water as well as on land.   () C. Fill in the blanks with the most suitable word. 1. Animals can move, _______________ to stimuli, grow and _______________ themselves.   2. The natural homes of animals are called _______________.   3. Cockles and clams are covered and protected by _______________.   4. Cobras, centipedes and widow spiders are _______________ animals.   5. Animals _______________ to ensure the survival of their species.   A. Write the number of the correct answer in the brackets. 1. Which of the following are vertebrates?(a) man (b) owl (c) worm (d) frog () (1)(2)(3)(4)  (a) & (b)(a) , (b) & (c)(a) , (b) & (d)All of the above. 2. Man is warm-blooded because his body ________. () (1)(2)(3)(4)  temperature is constanttemperature changesis warmhas blood flowing inside 3. All insects have a body that is divided into the ________. () (1)(2)(3)(4)  head and thoraxhead and abdomenthorax and abdomenhead, thorax and abdomen 4. Which of the following shows the life cycle of a mosquito? () (1)(2)(3)(4)Egg -> pupa -> wriggler -> mosquito.Egg -> wriggler -> pupa -> mosquito.Wriggler -> egg -> pupa -> mosquito.Pupa -> egg -> wriggler -> mosquito. 5. A fish uses the ________ for steering its direction when swimming. () (1)(2)(3)(4)   caudal finpectoral finspelvic finsdorsal fin B. Write " T" for true and " F" for false. 1. Animals differ in their eating habits, body shapes and sizes.   () 2. Invertebrates are animals with backbones.   () 3. Sharks are cold-blooded animals.   () 4. Insects do not have bones.   () 5. Snakes are vertebrates because they have backbones.   () C. Fill in the blanks with the most suitable word. 1. Animals are classified based on their similarities or shared _______________.   2. All insects have a pair of joint _______________ on their head.   3. Fishes breathe through their _______________ which are found between the mouth and the beginning of the food tract.   4. Some of us have birthmarks, others bear _______________ left by accidents or operations.   5. Each of us is _______________ in some ways, this makes us different from one another. A. Write the number of the correct answer in the brackets. 1. Which of the following are made from wood?(a) woks (b) papers (c) tyres (d) furniture () (1)(2)(3)(4)  (a) and (b).(b) and (c).(c) and (d).(b) and (d). 2. We use copper as electrical wires because copper ________. () (1)(2)(3)(4)  can conduct electricityis an insulatorhas nice colour and is cheapcan float on water 3. Plastic has become a commonly used material because________.(a) It is light weight.(b) It is environmental friendly.(c) It is durable.(d) It is soft. () (1)(2)(3)(4)  (a) and (b).(a) and (c).(b) and (c).All of the above. 4. To prevent wood from being attacked by insects, it is ________. () (1)(2)(3)(4)  cut into plankstreated with preservativessoaked in water for long periodsprayed with metal coating 5. Which statement about the Earth's crust is false? () (1)(2)(3)(4)   It is made of rocks.It is very hard and strong.It is not suitable for vegetation.It contains many mineral ores. B. Write " T" for true and " F" for false. 1. Most objects are made from a combination of different materials.   () 2. Rocks are lighter or less dense than plastics.   () 3. All things around us are made from some kind of materials.   () 4. The bodies of cars and aeroplanes are made of metals.   () 5. All metals can be attracted by magnets.   () C. Fill in the blanks with the most suitable word. 1. Some materials are _______________ while others are man-made or artificial.   2. We choose a particular material to make an object because the material has special _______________.   3. _______________ and _______________ combine to form cement for use in building houses, offices and factories.   4. An _______________ is a material made from a mixture of different metals.   5. In order to save the environment, we should use materials that can be _______________. A. Write the number of the correct answer in the brackets. 1. A freely suspended bar magnet will ________. () (1)(2)(3)(4)  come to rest in a north-south directionkeep rotating clockwisesway from side to sidestay in position with no movement 2. Which statement about magents is true? () (1)(2)(3)(4)  Like poles attract.Magnets are always bar shape.All magnets are natural magnets.Unlike poles attract. 3. The pull of a magnet is strongest at ________. () (1)(2)(3)(4)  the north polethe south poleboth the polesall points on the magnet 4. Which of the following is an application of magnets? () (1)(2)(3)(4)  Separate iron from other objects.Material for construction workers helmets.Detect different types of wood.Checking glass transparency. 5. An iron nail can be magnetised by ________. () (1)(2)(3)(4)   knocking it against a magnetsuspending it freely in the airpassing an electric current through itstroking it with a magnet B. Write " T" for true and " F" for false. 1. When magnets attract, there are magnetic forces.   () 2. Magnets can attract all metallic substances.   () 3. A magnet has either north and south poles or east and west poles.   () 4. The needle in a compass is a magnet.   () 5. Magnets are being used in loudspeakers.   () C. Fill in the blanks with the most suitable word. 1. Explorers use an instrument called a _______________ to help them with direction.   2. Magnets are either _______________ or artificial.   3. Substances that are attracted by magnets are known as _______________ substances.   4. The north pole of a magnet will attract the _______________ pole of another magnet.   5. Magnets must be stored _______________ to ensure they maintain their magnetism. A. Write the number of the correct answer in the brackets. 1. The ________ of the Earth creates day and night. () (1)(2)(3)(4)  revolutionrotationroundnessorbiting 2. At any time, ________ of the Earth's surface is having daylight. () (1)(2)(3)(4)  one-quarterone-halftwo-thirdthree-quarter 3. Although the Sun is many times larger than the Earth, it appears to be small because ________. () (1)(2)(3)(4)  it is very far awayit is very brightthere are many planetsit is blocked by clouds 4. The planet furthest away from the Sun is ________. () (1)(2)(3)(4)  MercuryNeptunePlutoUranus 5. The Earth is the ________ planet away from the Sun. () (1)(2)(3)(4)   secondthirdfifthsixth B. Write " T" for true and " F" for false. 1. Like all planets, the Sun has its own orbit.   () 2. The Sun provides heat and light to the Earth.   () 3. Clouds in the sky fall as rain to Earth.   () 4. Mars has only one moon.   () 5. The Moon is slightly larger than the Earth.   () C. Fill in the blanks with the most suitable word. 1. Objects which move around the Earth in space, such as the Moon, are known as _______________.   2. When we are on Earth, we see the Sun rises in the _______________ every morning.   3. The Sun, the nine planets and the moons form the _______________   _______________.   4. The planet with a ring around it is _______________.   5. The Earth revolves around the Sun once every _______________ days. A. Write the number of the correct answer in the brackets. 1. An object which gives off light is called a ________. () (1)(2)(3)(4)  lampreflectorlight sourcepower 2. In order for us to see an object, the object must be able to ________ light. () (1)(2)(3)(4)  absorbtransmitblock outreflect 3. We can see through glass because it ________. () (1)(2)(3)(4)  allows light to pass throughblocks out all the lightabsorbs all the lightis made of clear material 4. Which of the following is translucent? () (1)(2)(3)(4)  WoodTracing paperCardboardMirror 5. We can see an opague object like a brick wall because it ________ the light which falls on it. () (1)(2)(3)(4)   absorbstransmitsblocks outreflects B. Write " T" for true and " F" for false. 1. When there is no light source, we cannot see the things around us.   () 2. We see many things around us because these things give off light on their own.   () 3. We see the stars twinkling in the sky because they reflect light from the Sun.   () 4. The Sun is a natural light source.   () 5. Light paths do not bend around a corner on their own.   () C. Fill in the blanks with the most suitable word. 1. We use a _______________ to look at ourselves because it is a good reflector of light.   2. Objects that are bright-looking reflect _______________ light to our eyes than those which are dark-looking.   3. Light is a form of _______________.   4. When the reflected light is scattered in all directions, it is called _______________ reflection.   5. Light travels in _______________ lines.

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