Science Practice Paper 3

Balance Activity

Solid, Liquid Or Gas?Game 1Q2

Q1 (1)

(2)

Q3 (2)

Solid, Liquid or Gas? Game 2

Q4 (4)

Q5 (3)

Solids, Liquids and Gases are matter. All matter have mass and occupy space.

Liquids changes its shape according to the container. It also cannot be compressed.

Air does not have a definite volume. No matter how much air is pumped in, it takes the volume of the ball which is 250 cm3.

Q8Q7 (1)

(4)

Q9 (4)

Q10 (1)

Q11 (2)

Watch : Growth of A seedlingThe seed coat protects the seed.

A fair test : one with mineral salts and the other without. The rest are the same.

Seeds need water, warmth and food to germinate.

Q6 (4) Video: Water takes up the space occupied by air

Not all plants reproduce from seeds. Some plants reproduce from plant parts such as stems, leaves and even roots.

Watch : Conditions for Seed Germination

View : Table of Germinating times Of Seeds

Germination Table

Seed Germinating Time

Broccoli 6 -10 days

Cabbage 6- 10 days

Carrots 10 - 21 days

Cauliflower 6 - 10 days

Celery 10 -14 days

Cucumber 7 - 10 days

Parsnip 21-28 days

Radish 5 - 8 days

Sweet Corn 6 - 10 days

Tomato 10 -14 days

Onions 10 - 14 days

Peas 7 - 10 days

Parsnip

Radish

Q14

Q13 (4)

(2)

Q15 (2)

(2)Q16

View : Close up of Leaf Veins

Living things need food, water and air to survive.

Q12 (3)Quiz Time?

Roots don’t absorb oxygen! Stems, not flowers, hold up the leaves.

Video : Plant Parts and Functions

View : How Grass prevents Soil Erosion

Q19

Q18 (4)

(1)

Q20 (1)

Q17 (4)Only Plants can make their own food.View : Clay is a natural resource

An apple is light, smooth and round.

Outer casing of mobile phone should be strong light, waterproof and hard.

Q23

Q22 (2)

(4)

Q21 (2) Plastic is waterproof and durable (does not tear easily. It can also be easily folded (styrofoam cannot)

View : Life Cycle of A Butterfly

Q25 (4)

Q24 (2) A B C

1 dog ✔ moth ✘ bird ✔

2 horse ✔ frog ✔ cockroach ✔

3 shark ✔ toad ✔ crocodile ✔

4 guppy ✔dragonfly ✔

squirrel ✘

(4)

Tadpole does not resemble frog.

Tadpole breathes with gills, but frog breathes with lungs.

All life starts from fertilised eggs.

Q26 (4) Windpipe is part of the respiratory system

Q29

Q28 (2)

Q27 (2) Skeletal system gives the body shape and protects the inner organs.

Blood vessels are tubes which transport blood, water, oxygen, food, etc in the body.

A B C D

1 food ✔ water ✔carbon

dioxide ✘nutrients ✘

2water ✔

oxygen ✔

nutrients ✔

wastes ✔

3oxygen ✔

carbon dioxide

✘food ✔ water ✔

4 wastes ✘ food ✔ water ✔carbon dioxide

✔

(3)

Q30 (4) When a person is swimming, he needs to breathe. His heart pumps more blood and his arm muscles work hard to move through the water.

Q32.

Q33.

Q34.

(a) Alex (b) The mass remains the same

i) Air can be compressed.ii)Air has no definite shape

Q31.A : electricityB : Ball (definite shape)C : Tea (no definite shape)D : Wind (cannot be seen)

Q36.

Q37.

(A) leaf (B) roots (i) Part A makes food for the plant.(ii) Part B absorbs water from the ground

Q35. (a) The aim is to find out if the amount of water given to seeds affect the amount of time taken for it to germinate(b) The roots would appear first

food carrying tubes

(phloem)water carrying

tubes (xylem)

(b) To all parts of the plant

Q39.

Q40.

(a) pupa, nymph(b) The butterfly has 4 stages in its life cycle but the cockroach has 3 stages.

Q38. B ( gullet) C (stomach)E : (small intestine)F : (anus)

F (tadpole breathes through gills)T F (Frog’s eggs don’t need to be kept warm)T

Q42a.

Q42b.

(i) plant(ii) fungi

Q41. A : Man-made/Synthetic B : AnimalsC : Wood/Rubber/Cotton/Latex/PaperD : Plastic/Glass/Rayon

The living things in Group X can make their own food but the living things in the other groups cannot.