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Team 2
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15
×
GR: Metallic spare parts are covered with grease.
To protect them from rust and corrosion.
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15
×
GR: No change in the potential energy when the object moves horizontally.
Because the height doesn't change ( = zero), and the P.E is directly proportional to the height
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baam
Lose 20 points!
Oops!
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shark
Other team loses 25 points!
Okay!
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gift
Win 25 points!
Okay!
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baam
Lose 25 points!
Oops!
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eraser
Reset score!
Oops!
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star
Double points!
Okay!
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shark
Other team loses 10 points!
Okay!
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thief
Give points!
5
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25
15
×
GR: Cooking pots are made up of aluminium.
Good heat conductor and has high melting point.
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15
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GR: A drop of ink spreads through water.
Because the molecules of ink are in a continuous state of motion in all directions among water molecules.
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15
×
What are examples of inactive metals?
Gold, Silver, Platinum, Nickel.
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15
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GR: Water is not used for put out petrol fire.
The D. of petrol is less than water, so it floats on the water surface and the fire keep burning.
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15
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Complete: By increasing the height of an object. ...................increases, ..................decreases, .............remains constant.
P.E , K.E , M.E
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15
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Calculate the mass of an object, its kinetic energy equals 90 J, and its speed equals 6 m.sec.
5 Kg
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15
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Give 3 examples of nonrenewable resources of energy.
Fuel, food, nuclear reactions.
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15
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We can divided materials according to the hardness into 3 groups: 1.......,2.........,3........
Rubber,Metals, Coal
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15
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Complete: ..................solution and....................solution are bad electric conductors.
Sugary solution, hydrogen chloride in benzene.
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15
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A force of 20 N is acted on a body to move it to a distance of 2 meters in the direction of the force.Calculate the work done.
W= F X D= 20 X 2 = 40 J
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seesaw
Swap points!
Oops!
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shark
Other team loses 25 points!
Okay!
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fairy
Take points!
5
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15
20
25
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banana
Go to last place!
Oops!
15
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This element is:.................../ No. of protons:.............../ No of neutrons:....................
Bromine, 35, 45
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