SOLUCIONES NATURAL AND ENGLISH

NATURAL SCIENCE

Pg.4

1.

a) What type of change does each picture show?

Picture a) shows a physical change, precipitation and evaporation.

Picture b) shows a chemical change, combustion.

Picture c) shows a chemical change.

Picture d) shows a physical change.

b) What type of change produces a new substance?

A chemical change produces a new substance.

c) What atmospheric changes can cause precipitation?

Changes in temperature or air pressure can cause precipitation.

d) What type of change occurs when we fry an egg?

A chemical change occurs when we fry an egg.

2. 

a) Make a table.

PHYSICAL	CHEMICAL
Ice cubes melting in a drink	Wood burning in a fire
Folding a piece of paper	Biscuits cooking in an oven
Painting a wall	Fireworks exploding
Cutting or slicing potatoes	Mould growing on bread

Pg.7

2. Correct the false sentences in your notebook.

a) False: Reflection occurs when light hits a surface.

b) False: Liquids usually have a smooth, even surface.

c) True.

d) True.

3. Complete the sentences.

a) There are two types of electrical charges: positive and negative.

b) Positively charged objects attract negatively charged objects, and repel positively charged objects.

Pg.9

2. Match to make sentences in your notebook.

a) 2   A mixture is a substance with two or more components.

b) 4   Homogeneous mixtures have a consistent color or texture.

c) 1   Heterogeneous mixtures have varied colors or textures.

d) 3   A solution is a mixture with a solvent and a solute.

Pg.11

2. Match each mixture to the best method of separation. Write sentences.

a) The best way to separate sand and sugar is by dissolution because they are two solids, one is insoluble and the other is soluble.

b) The best way to separate petrol and water is by distillation because both are liquids.

c) The best way to separate cocoa and milk is by evaporation because cocoa is a soluble solid.

d) The best way to separate sand and water is by filtration because sand is an insoluble solid.

ENGLISH

Pg.30-31

1. Your own answers.

4.Look at questions 1-5 in the exam task on page 31. Are they testing understanding of fact, opinion or feeling?

1.    FACT: In this text Sean is describing: D) some of his experiences of watching scary movies.

2.    FEELING: How did Sean feel about his first scary movie? B) He had a mix of negative and positive feelings.

3.    FACT: What does Sean say about the effect scary movies had on him? C) They changed his attitude to ordinary situations.

4.    OPINION: What does Sean say about his attraction to fear? D) He doesn´t understand why he enjoys being scared.

5.    OPINION: What advice might Sean give to young people about watching scary movies? A) You should never watch scary films alone or without your parents´ permission.

Pg.32-33

1.1. The past simple is used to refer to something that has finished.

1.2. The present perfect is used to refer to something that started in the past and is still true now.

2.1. describes something which happened very recently.

2.2. the time when it happened is not given.

3. Complete the sentences with have, has, has not or have not.

3.1. Have

3.2. has

3.3. have

3.4. has

3.5. hasn´t

3.6. haven´t

4. Your own answers.

5. Choose the correct verb form in these sentences.

5.1. have been

5.2. won

5.3. read

5.4. has

5.5. have been

6. Put the words in the correct order to make questions.

6.1. How many films have you watched on DVD this week?

6.2. How many times have you been to the cinema this month?

6.3. Have you ever seen a film in another language?

6.4. Which film have you seen more than five times?

6.5. Have you ever cried in a movie?

6.6. What´s the scariest film you have ever seen?

EXAM TASK

Read the text and choose the correct word.

1. A

2. D

3. B

4. A

5. D

6. A

7. B

8. B

9. B

10. C

Pg.35 

EXAM TASK WRITING

Pg.36

3. Complete and match the sentences with statements a-d.

3.1. just - a

3.2. already - b

3.3. yet - c,d

4. Complete the sentences.

4.1. yet 

4.2. already

4.3. just

4.4. for

4.5. never

4.6. since

Pg.37

5. Complete the table with the noun and verb form of the adjectives.

Adjective	Noun	Verb
exciting/excited	excitement	to excite
worrying/worried	worry	to worry
enjoyable	enjoyment	to enjoy
relaxing/relaxed	relaxation	to relax
organised	organisation/ organiser	to organise
challenging	challenge/challenger	to challenge
disappointing/ disappointed	disappointment	to disappoint
entertaining	entertainment	to entertain

6. Complete the sentences with the correct form of the word in brackets.

6.1. exciting (adj)

6.2. relaxed (adj)

6.3. entertainment (noun)

6.4. enjoyment (noun)

6.5. worried (adj)

6.6. challenge (noun)

6.7. disappointed (adj)

6.8. organisation (noun)

7. Look at these sentences. Which have a similar/different meaning?

7.1. Different: sentence a tells you there are scary rides at Europa Park but doesn´t compare them to anywhere else; b compares the rides to others in Germany.

7.2. Similar

7.3. Similar

7.4. Similar

7.5. Similar