Chapter Summary _ Form 2

Revision Summary - Science Form 2 These are brief summary questions that is necessary for you to be able to answer after each chapter learned.

Please do come and refer to your science teacher for any inquiries

The revision summary was taken from the ‘EXPRESS Studybook Series Form 2’ by K.T.Tew & S.C.Toh (Produced by Pelangi Sdn. Bhd.) This book also includes

Brief & Concise Conceptual Map Glossary

1.

What is a stimulus?

2.

Name the 5 sensory organs in humans.

3.

What are the factors that determine the sensitivity of your skin?

4.

Where are the smell receptors located?

5.

Identify the different areas of the tongue that respond to different taste.

6.

Write down the path taken by the sound waves from ear to the brain.

7.

How does the eye focus light from an object to the retina?

8.

Define reflection of light.

9.

Define refraction of light.

10.

What type of lens is used to correct short-sightedness?

11.

What are the advantages of stereoscopic vision?

12.

How is sound produced?

13.

Name the types of response in plants.

14.

Why are the responses of plants towards stimuli important for their survival?

1. 2.

State the different classes of food and their functions. Name the materials used to test Starch Protein Glucose Fats

a) b) c) d)

3.

What is balance diet?

4.

What is the importance of balance diet?

5.

Explain what digestion is.

6.

Draw a conceptual map to show the flow of food in the alimentary cannal.

7.

Which organ in the digestive system a) reabsorbs water and mineral salts? b) digests fats? c) passes food from the mouth to the stomach?

8.

List the end products of digestion of carbohydrates, proteins and fats.

9.

What are villi?

10.

Explain the process of absorption of food in the small intestine.

11.

What is defecation?

12.

What is constipation?

13.

State 2 ways of preventing constipation.

1.

(a) What is a habitat? (b) Why is a habitat important to an organism?

2.

Name the 2 main groups of living organisms.

3.

(a) How many groups can the vertebrates be classified in? (b) Name them.

4.

What are the common characteristics found in a lizard and a snake?

5.

Why do you classify mammals as vertebrates?

6.

(a) What are invertebrates? (b) Give 5 examples of invertebrate.

7.

State 1 similarity and 3 differences between the monocotyledon and the dicotyledon.

8.

What is the importance of biodiversity to the environment?

1.

What is a habitat?

2.

What is the difference between a population and a community?

3.

What does an ecosystem consist of?

4.

What is the role of bacteria and fungi in an ecosystem?

5.

Explain the following words. a) Commensalism b) Mutualism c) Parasitism d) Predator e) Prey

6.

(a) What is biological control (b) What are the advantages of biological control?

7.

Why are the green plants called producers?

8.

What does the pyramid of numbers show?

9.

(a) state what photosynthesis is. (b) State the factors required for photosynthesis. (c) State the products of photosynthesis.

10.

Explain what conservation and preservation are.

1. 2.

3.

4. 5. 6.

7. 8. 9. 10. 11.

12.

13. 14.

15.

Describe the physical properties of water. State the meaning of a) the freezing point of water b) The boiling point of water What is the effect of impurities on a) The freezing point of water b) The boiling point of water How do you test for the presence of hydrogen and oxygen? What is the ratio of hydrogen to oxygen in one molecule of water? Explain what evaporation is. State the factors affecting the rate of evaporation. Compare and contrast between evaporation and boiling. Explain what the terms solute, solvent, solution mean. State the factors affecting the rate of solubility. Name 5 examples of organic solvents and their uses. Identify a) The properties of acids b) The properties of alkali Explain the meaning of neutralisation Describe the various types of water purification Explain how the water supply system works.

What is air pressure? 2. Describe an experiment to show that air exert pressure. 3. (a) Name 2 factors that affect air pressure. (b) Explain how these 2 factors can influence air pressure 4. Explain the workings of a syringe. 5. What is siphon? Explain how it works. 6. How does an insecticide spray pump produce fine spray of liquid? 7. What causes the liquid in a glass rise when you suck it with a drinking straw? 8. Explain how a blockage in a sink can be removed by using a suction pump. 9. (a) Why is it difficult to pour condensed milk from a can if only one hole is made on the lid? (b) Why should 2 holes be made for the milk to flow out? 10. How can a gas be changed into liquid state? 11. State 3 safety measures when using gases under high pressure. 1.

1. 2. 3.

4. 5. 6. 7. 8. 9. 10. 11. 12.

What is a force? List the effect of forces. (a) Name the different types of forces. (b) What is the meaning of gravitational force? (a) What is the S.I. Unit for force? (b) Name the tool used for measuring force. (a) What is the meaning of frictional force? (b) Give some examples to show the existence of frictional force. (a) State the factors that will influence the magnitude of frictional force (b) Explain how these factors can influence the magnitude of frictional force. (a) state 5 advantages of friction (b) State 5 disadvantages of friction (a) State 4 ways to increase friction (b) State 4 ways to reduce friction Define work done. State the unit of work. (a) Write down the equation to show the relationship between work, force and distance (b) Name 2 factors that can influence the quantity of work done. State the meaning of power. Name the unit of power. What is the relationship between power, work and time? Name 4 daily activities that need friction.

1.

(a) State the type of support system in animals (b) Define andoskeleton, exoskeleton and hydrostatic skeleton.

2.

What is the support system in land vertebrates?

3.

Why do aquatic vertebrates have smaller pectoral and pelvic girdles?

4.

State 3 differences between the support system of land and aquatic vertebrates

5.

(a) What are the support systems of invertebrates? (b) Give 1 example each of invertebrates with the support systems in (a)

6.

(a) What are herbaceous plants? (b) How are herbaceous plants supported?

7.

(a) What are woody plants? (b) How are woody plants supported?

8.

Name 2 special roots that give additional support to land plants.

9.

How do herbaceous plants with soft stems climb other plants or supports?

10.

What is the support for aquatic plants?

11.

Explain why a whale cannot survive if it is washed ashore.

1.

Define the point of equilibrium.

2.

What is the centre of gravity?

3.

(a) State the factors that can affect the stability of an object. (b) Explain how these factors can affect the stability of an object.

4.

Explain why we are more stable when we stand with our legs apart.

5.

Why is a crocodile more stable than a giraffe?

6.

State the factors that make racing cars stable.

7.

Why do laboratory apparatus have wide bases?

8.

Passengers in a moving boat are not allowed to stand up. Why is this so?

1.

What is the advantage of using lever?

2.

Name the 3 parts of a lever.

3.

What are the 3 classes of levers?

4.

For each class of lever, state the relative position of the fulcrum (F), Effort (E), Load (L)

5.

Give 3 examples of each class of lever.

6.

What is meant by the moment of force?

7.

State the unit for measuring the moment of force.

8.

Write out the formula for calculating the moment of force.

9.

State the principle of moments.

10.

How do machines help us in our work?