Page 138 - SK Year 2 Science DLP

Unit 1: SCIENTIFIC SKILLS I Answer (page 72)
1. a) sun, fire, lamps b) light c) objects
Suggested answer for HOTS (page 10) 2. a) easy b) difficult
No. Human growths are different among individuals of the same 3. Position A – torch
age because of the difference in day of birth, food consumption, Position B – paper windmill
lifestyle, environmental factors, and others. 4. tracing paper – less clear
Suggested answer for HOTS (page 14) pencil – clear frosted glass - less clear
The garden snail is a live specimen. Releasing the snail after glass – less clear steel ruler -clear
conducting an experiment is an ethical practise and it is vital to Suggested answer for HOTS (page 72)
maintain a balanced habitat. Human daily activities need to be done in bright conditions. Light is
I Answer (page 16) reflected into our eyes and enable us to see. If there is no light, it
1. a) Stethoscope – hearing would be hard for us to conduct our daily activities.
b) Magnifying glass – sight
2. Similarities: All of them have legs and tails. Unit 7: ELECTRICITY
Differences: The eagle, duck, and chicken have wings, Suggested answer for HOTS (page 78)
but the lizard, monitor lizard, and crocodile have no wings. The brightness of the bulb will decrease because the dry cell will run
3. a) 120 cm b) 25 kg out of energy.
4. Sketching a specimen correctly. Let’s Think (page 78)
Unit 2: SCIENCE ROOM RULES Dry cell, bulb, and switch.
Suggested answer for HOTS (page 80)
Let’s Think (page 21) The other predictions could be due to faulty bulb holder, wire, dry cell
Report any damaged equipment or apparatus to the teacher immediately.
I Answer (page 22) holder, and switch.
I Answer (page 85)
1. To ensure their safety and the safety of other users. 1. a) dry cell.
2. No. Liquid wastes should be disposed of in the sink. b) complete and break an electric circuit.
3. To make it easy for other users.
2. a) Circuit C because the circuit is complete.
Unit 3: HUMANS b) Circuit A and B because the circuits are incomplete.
Suggested answer for HOTS (page 30) 3. a) Electrical conductors Electrical insulators
No. The palm size, height, and weight are not the same as these traits
are inherited from our own parents and ancestors. Furthermore, food fork banknotes
consumption and environmental factors also affect the different traits nail leaf
in individuals. screw thread
I Answer (page 34)
1. a) size, height, and weight 4. a) An electrical conductor is a material or an object that allows
b) same, different electric current to flow through it.
2. features, ancestors b) fork, nail, and screw
Suggested answer for HOTS (page 34) 5. a) An electrical insulator is a material or an object that does
Some people may be able to do certain activities such as sports not allow electrical current to flow through it.
activities better than others. b) banknotes, leaf, thread
Unit 4: ANIMALS Unit 8: MIXTURE
I Answer (page 100)
I Answer (page 48) 1. a) Hand-picking
1.
Lay eggs Give birth b) Magnetic attraction
c) Floatation
lizard crab bat deer d) Sieving
2. Some animals lay a few eggs because the eggs are 2. Sugar and salt
taken care of by the parents. Examples 3. i. Using hot water
are chickens, birds, and penguins. ii. Stirring
3. Some animals lay many eggs because the eggs are not taken care of iii. Using small-sized materials
by the parents. The eggs are easily eaten by other animals. Examples
are fish, frogs, and turtles. Unit 9: EARTH
4. egg: 1, chicken: 4, chick: 3, hatchling: 2 Suggested answer for HOTS (page 103)
5. young squirrel and duckling The earth would dry up. All humans, plants, and animals would die.
6. The life cycle of the butterfly starts with the eggs. When the eggs hatch, I Answer (page 116)
they become larvae. The larvae change to pupae. Finally, 1. A - lake 3. clouds
they turn into butterflies. B - river
Suggested answer for HOTS (page 48) C - spring water vapour rain
Monkeys reproduce by giving birth to a few young. The young are similar 2. Q →R [✓]
to their parents. The parents take care of their young until they reach R → S [✓]
adulthood to ensure the young survive. water
Unit 5: PLANTS 4. i. It helps to dry clothes.
ii. It helps to fly the kites in the sky
I Answer (page 59) 5. A strong wind produces big waves.
1. Food, medicine, habitat, and air to breathe.
2. Water, air, and suitable temperature. Unit 10: TECHNOLOGY
3. A-D-C-B Suggested answer for HOTS (page 123)
4. Increase in the number of leaves, size of leaf, height of plant, and You will take a long time to finish.
circumference of stem. Suggested answer for HOTS (page 127)
5. Water, air, and sunlight. I will inform the teacher immediately because a model cannot be
6. C-B-A-E-D assembled if there is not enough components.
Unit 6: LIGHT AND DARK I Answer (page 129)
1. a) aeroplane, deer, ship, tree, tortoise
Suggested answer for HOTS (page 63) b) helicopter, lorry
Fireflies are not a source of light as they emit light at certain times only. 2. a) cube
Suggested answer for HOTS (page 65) b) prism
Yes. Light is important to humans because most of the daily activities are c) cylinder
done in the presence of light. For example, to see, play sports, complete 3. An illustrated manual is a guide to assemble a model correctly.
works, have fun, and others. 4. So that the building set looks neat and tidy./We will know which
Suggested answer for HOTS (page 69) component is missing.
Two shadows are formed because the light from two sources are blocked 5. I will arrange every component according to its shape, size,
by the tree. and colour.
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