Download Cairo Governorate Helwan Education Zone El

Cairo Governorate
Helwan Education Zone
El-Mostakbal Exp. Lang. School
Exam(2)
(1) A) Complete:
1. The somatic cell contains ............... number of chromosomes
while the gametes contains ............... number of chromosomes.
2. There are two kinds of mirrors which are ...............and ...............
3. The earth rotates around the ............... while the sun rotates
around the center of ...............
B) What are the reasons lead to:
1. Difference in year from planet to another.
2. Difference in day length from planet to another.
3. Explosion of stars in modern theory.
4. The incident light ray reflects on itself.
C) In opposite figure:
A body move from point A to point B
Then C then D calculate
1-distance
2-displacement
3-velocity
B
30 m
20 sec
A
50 m
20 sec
C
30 m
10 sec
D
(2) A) Show by drawing the properties of image formed by concave
mirror if the body at distance equal to duple focal length.
B) Write the scientific term:
1. The rate of change in distance.
2. Female reproductive cell of human.
3. Group of stars has a spiral arms.
4. The measuring unit of relative speed,
C) Give reason for:
1. Density is a scalar physical quantity.
2. There is no image formed if the body standing at focus of
convex lens.
3. There is variation between offspring of human.
(3) A) Choose the correct answer:
1. If the number of chromosomes in left lung cells of rabbit equal
20 chromosomes so the number of chromosomes in its skin is
[40 – 20 – 10] chromosomes.
2. The ............... mirror from erect equal image of on object.
[convex – concave – Plane]
3. The most abundant body in the solar system.
[planets – universe – sun]
B) What happen when:
1. The light ray falls passing through focus of concave mirror.
2. The reproductive cell undergo meiotic division.
3. The speed of rotation of planet around its axis increase.
4. The incident angle decrease to help.
C) If a boat starts to move from rest till its speed becomes 2.5 m/sec
through 5 sec find the acceleration and its kind.
(4) A) What is meant by:
1. Fertilization.
2. Non uniform speed.
B) Correct underline:
1. Big bang theory explain the formation of solar system.
2. When the speed increase the time increase.
3. The speed of body that move 1200 meter during one minute
equal 1200 m/s.
4. The plane mirrors form equal inverted image.
C) Compare between:
1. Short and long sightedness [according to position of image].
2. Convex and concave mirror [according to position of center of
curvature].
3. Crossing star theory and modern theory [according to name of
scientist].
4. Yeast and amoeba [according to kind of reproduction]
With our best wishes.
Model Answer
Exam (2)
(1) A) Complete:
1. Complete or (diploid) – half (haploid).
2. Plane – Spherical.
3. Sun – Galaxy.
6 × = 3 Marks
1.
( )
B)
- The distance between sun and planets.
- The speed of rotation around the sun.
( )
2. The speed of rotation of planet around its axis.
(1)
3. The nuclear reaction.
(1)
4. The incident angle = reflecting angle = zero [falls perpendicular]
(1)
C)
1. Total distance = 30 + 50 + 30 = 110 m
(1)
2. Displacement = 50m AD
(1)
3. Velocity =
(1)
=
= 1 m/sec
3 Marks
(2) A)
1. Erect.
( )
2. Equal to object. ( )
3. Real.
( )
4. At center of curvature.
3 Marks
B) Scientific term:
1. Speed.
2. Egg (Ovum)
3. Milky way galaxy.
4. m/s
4 × 1 = 4 Marks
C) Give Reason:
1. Because, it needs magnitude value only to be characterized and
doesn’t need direction.
2. Because, the refracted rays are parallel.
3. Because the traits formed from combination between male traits
and female traits and due to crossing over phenomenon.
(3) A)Choose:
1. 20.
2. Plane.
3. Sun.
3× 1 = 4 Marks
B) What happen:
1. It will reflected parallel to the principle axis.
(1)
2. It will produce 4 gametes which have half number of
chromosomes.
(1)
3. The day length decrease.
(1)
4. The reflected angle decreased to half.
(1)
4 × 1 = 4 Marks
C)
a =
=
(1)
V1 =Zero
=
=
(1)
V2 = 2.5 m/sec
=
= 0.5 m/sec2
(1)
T=5 Sec
3 Marks
(4) A)What is meant by:
2 × 1 = 2 marks
1. Fertilization: It's combination of the male gamete and female
gamete to form zygote which contain complete number of
chromosomes.
2. Non uniform speed: It's the speed of body when it covers
equal distances in unequal periods of time.
3.
(1)
B) Correct underline:
1. Universe.
2. Decrease.
3. 20 m/s
4. Erect (upright)
C) Compare between:
4 × 1 = 4 Marks
4 × 1 = 4 Marks
Short sightedness
Long sightedness
Image formed in front (before)
Image formed behind (after)
retina
retina
Convex
Concave
The center of curvature behind
The center of curvature in front
mirror surface
mirror surface
Crossing star
Modern theory
Chamber lain and molten
Alfred hale
Yeast
Amoeba
Reproduce by budding
Reproduce by binary fission
 Each question 10 marks
40 / 20 = 20 Marks
‫ ناجى عبدهللا‬/‫إعداد‬
‫مدرسة مستقبل حلوان‬
‫إدارة حلوان‬
10 × 4 = 40