EF2+corrigé Ang2 SM 18 19

Faculty of Science

2nd Term English Exam

Department of SM
July, 2019

Answer Key

20
19
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University of Tlemcen

(U
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20
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1- You are………..........than I am.
*stronger than (1pt)/ *the strongest
2- My uncle has……………..dog you have ever seen!
*fatter / *the fattest (1pt)
3- My neighbours are ……………..but their house is………………
*Poorer than/ the largest, *the poorest, the largest (0.5+0.5pt)
4- Susie is ……………..of the four girls.
*prettier than / *the prettiest (1pt)
5- For ……………information, please visit our website.
*further (1pt) / *farther/ *farthest

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Activity Two: put the following forms of energy into either Potential Energy (PE) or Kinetic
Energy (KE)
(5pts)

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Batteries, food, hot water, magnetic, X-rays, wind, compass, lightening, turning drill
bit, fusion.

2)
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Potential Energy
1- Magnetic (0.5pt)
2- Compass (0.5pt)

Kinetic Energy
1-Hot water (0.5pt)
2-x-ray (0.5pt)
3-Lightening (0.5pt)

4- Fusion (0.5pt)

4-Wind(0.5pt)

5- Food (0.5pt)

5-Turning drill bit(0.5pt)

_____________________

SM

/S
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3- Batteries (0.5pt)

Activity Three: Find the errors in the sentences. Write the sentences correctly. (5pt)

MD

1- He ought to take him to the emergency room. (1pt)

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2- You should to help people. (1pt)

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3- He has better do CPR. Correct (1pt)

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4- They ought not to hurt his leg. (1pt)
5- I had better not put hot water on the burn. (1pt)

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Activity One: Choose the appropriate word to form the comparative/superlative of the
following sentences:
(5pts)

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19
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(U
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20
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MD

SM

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(S

2)
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1- Electromagnetic force tells us that protons should repel each other and the atom
should fly apart.
 FALSE (0.25pt). Electromagnetic force tells us that protons should repel
each other. Thus, the Nucleus should fly apart. (0.5pt)
2- Massive particles in the atom are negatively charged.
 FALSE (0.25pt). Massive particles in the atom are positively charged (0.5pt)
3- The weakest force holds quarks tightly to form nuclear particles and overcomes the
intense of repulsion.
 FALSE (0.25pt). The strong force holds quarks tightly to form nuclear
particles and overcomes the intense of repulsion. (0.5pt)
4- The electromagnetic force is the mightiest of all interactions. It attracts protons to
neutrons.
 FALSE (0.25pt). Electromagnetic force is the second strong interaction. It
attracts protons to neutrons (0.5pt) Or
The strong force is the mightiest of all interactions. It holds quarks tightly
to form nuclear particles. (0.5pt)
5- Particles such as electrons are expelled in the form of radiation in an imbalance
nucleus.
 TRUE. (0.5pt)
6- If lithium (Li) with an atomic number of 3 has 4 as number of neutrons, the number
of protons in the nucleus is 4 and the mass number is 8.
 FALSE (0.25pt). The number of protons in the nucleus is 3 and the mass
number is 7. (0.5pt)
7- Like charges attract and unlike charges repel because of the gravitational
interaction .
 FALSE (0.25pt) .Like charges repel and unlike charges attract because of
the Electromagnetic interaction. . (0.5pt)

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Activity Four: Mention if the statements are true or false then correct the mistakes where
necessary:
(5pts)

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