EF2+corrigé Ang2 ST 18 19

2nd Semester – 10/07/2019

English Exam

Full Name:
Signature:

(U
AB
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Group:

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L1 S.T

4. proton
5. gravity
6. conductivity

7. discoveries
8. orbiting
9. charged

cie
n

ce
s

1. Matter
2. universe
3. mass

1- “If it weren't for gravity, life on earth would be impossible.” (0.75)

de
sS

2- “The universe is wider than our views of it.” (0.75)
3- “Matter is what forms physical objects, possesses mass and occupies space.”

lté

(1. 5)

Fa
cu

4- “A satellite phone connects to satellites that are orbiting the Earth.” (0.75)
5- “The electrical conductivity of sea-water increases with the salinity.” (0.75)
6- “The research led to a number of important discoveries about the disease.”

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(0.75)

(S

7- “When an atom is charged, it becomes an ion.” (0.75)

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Task N°2 (05 pts): Reorder the following words in order to form meaningful sentences.

SM

a. are – interesting. – scientific - the – disciplines – All

MD

All the scientific disciplines are interesting. (1.5)

eL

b. a – particles – The – of - packed – solid – are – together.

ièr

The particles of a solid are packed together. (02)

em

c. full – The – is - universe – matter. – of

Pr

Page Facebook "Sciences Tlemcen"

Task N°1 (06 pts): Complete the following sentences with the appropriate words from
the list below. Not all the words can be used.

The universe is full of matter. (1.5)

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(U
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Task N°3 (03 pts): Complete the sentences below using the appropriate connective from
the following list:
“because – but – so – although”

a. Water evaporates at 100C°, but ethanol starts to evaporate at 78C°. (0.75)

b. The exam was difficult, although not as difficult as we had expected. (0.75)

ce
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because they want to understand the universe. (0.75)

de
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cie
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d. I know you must be tired, so I will let you rest. (0.75)

lté

Task N°4 (06 pts): Put the verbs between brackets into the correct tense:

Fa
cu

a. The word matter refers to everything in the universe that has mass and takes up
space. (1. 5)

2)
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b. When a solid is heated to its melting point, it becomes liquid. (0.75)
c. This liquid was heated to its boiling point and converted into a gas. (0.75)

(S

d. We are measuring the heat using a thermometer. (measure / measured) (0.75)

em

ièr

eL

MD

SM

/S
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e. If we mix oil and water, then oil will float on water (floats) (1. 5)

Pr

Page Facebook "Sciences Tlemcen"

c. Thousands of researchers study physical and chemical phenomena

Good Luck!