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Primary 5-Science
Mid-term revision sheet
Name:……………………………………
class:……………………………
1-Complete:1-Friction force has its effect on the …….……… direction of the object's movement force.
2-The force that slows down the object's motion is called ………….………
3-The value of …………..……between two surfaces depends on the type of material of
both surfaces.
4-….………..…and…………..….is used to decrease the effect of friction force between
the internal moving parts of machines.
5-Friction force has its effect in the opposite direction of…………….………….
6-The force of…………..…………acts in the direction of an object's movement.
7- …………………...increases by increasing the surface area of a moving object.
8-The wet roads leads to……………… friction force between the car tires and the road.
9-The friction force increases between………………….surfaces and decreases
between……………….….. surfaces.
10- Heart is located inside the chest cavity between the….…………..………..
11- The upper two chambers of the heart are called….………. and the lower two chambers
are called………….……
12-There is a ……………..between atrium and ventricle to allow the blood to flow in one
direction and prevent its returning back.
13- Blood vessels consist of …………..……, veins and…………………….
14-……………………………….blood cells carry oxygen and carbon dioxide..
15- Blood platelets form …………….………………which help in healing wounds.
16- All arteries carry blood rich in oxygen except the……………..…………. artery.
17- All veins carry blood rich in carbon dioxide except the……………………veins.
18-Blood flows inside a network of pipelines called…………….…………
19-Left ventricle pushes the blood into…………………..………
20-Pulmonary artery carries………………………….blood while pulmonary veins
carry……………………..……blood
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2-Put ( √ ) or ( X ) and correct the wrong ones:1-The air resistance decreases when the car moves so fast.
(
)
2-The relationship between the surface area of the object and the air resistance is an inverse
relationship.
(
)
3-When the parachutist opens his parachute, the air resistance decreases.
(
)
4-Ball bearings used to increase the friction force.
(
)
5-Oil is used to decrease the friction force.
(
)
6-White blood cells defend the body against microbes.
(
)
7-The aorta delivers blood to the lungs.
(
)
8-The heart has two sides.
(
)
9-The oxygenated blood carries carbon dioxide gas.
(
)
10-The heart pumps blood to all body parts.
(
)
3-Choose:1-Blood circulation between the heart and the lung.
a)major blood circulation
b)minor blood circulation
c)plasma
d)veins
2-…………………coagulate blood when the body is wounded.
a) Red blood cell
b) White blood cell
c) Plasma
d) blood platelets
3-…………………..is the watery part of the blood.
a) Plasma
b) Blood platelets
c) Red blood cells
d) White blood cells
4-Blood components which are responsible for attacking the microbes are……………..
a) Red blood cells
b) White blood cells
c) Blood platelets
d) Plasma
5-Blood vessels which carry blood from the heart to body are the…………………
a) Arteries
b) Veins
c) Blood capillaries
d) Plasma
6-The heart is a muscular organ in the size of your……………….
a) Finger
b) Foot
c) Fist
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d) Head
7-……………..receives the oxygenated blood from lungs.
a) Left atrium
b) Right atrium
c) Right ventricle
d) Left ventricle
8- We use ……………..in internal movig parts of machines to decrease friction force.
a)oxygen
b)ball bearing
c)lubricants
d) b and c
9-The friction force depends on…………
a) The type of the material surface only.
b) The surface area of the moving object.
c) The attraction force.
d) (a) and (b)
10-The friction between the internal moving parts of machines causes ………….
a) The erosion of the machines parts.
b) The damage of the machines parts.
c) An increase in their temperature.
d) All the previous answers.
.
4-Write the scientific term:1-The friction force between air and the moving object through.
[
2-The friction force between water and the object that moves through.
[
]
]
3-A set of small metallic balls of smooth surfaces are put between the internal moving parts
of the machine.
[
]
4-The artery that carries oxygenated blood to all body parts.
[
]
5-The artery that carries deoxygenated blood to the two lungs.
[
]
6-Network of pipelines that extends all over the human body. [
]
7-The system that transports the digested food, oxygen and water to all body cells.
[
]
8-Strong muscular hollow organ that pumps blood continuously and it is about your fist in
size.
[
]
9-Red fluid (liquid) passes through the blood vessels.
[
]
10-Blood circulation between the heart and all body parts.
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[
]
5-Give reason:1-Ball bearings are used between the internal moving parts in machines.
To decrease the friction force.
2-Rockets and aircrafts have streamline shape.
To decrease the air resistance.
3-Car tires have grooves connected with narrow channels.
To squeeze the water out.
4-There is a wall between right side and left side of the heart.
To prevent mixing of the blood of the both sides.
5-There is a valve between each atrium and ventricle.
To let the blood flow from the atrium to the ventricle without returning back.
6-Blood is a fluid.
Because of the presence of plasma.
6-Label the following figure:1-………………………………
2-………………………………
3-………………………………
4-………………………………
5-………………………………
6-………………………………
7-……………………………….
8-………………………………
9-……………………………….
10-……………………………..
11-……………………………..
12-……………………………..
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