science physics grade 8

Question 1: Which force is being applied by a vendor when he is pushing the pushcart?

• Muscular force

• Magnetic force

• Friction

• Electrostatic force

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NGSS.MS-PS2-2

How much weight of air is always over your head?

• 1 kg

• 1000 kg

• 100 kg

• 10 kg

Which force causes a charged balloon to attract another balloon?

• Muscular force

• Electrostatic force

• Magnetic force

• Gravitational force

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NGSS.MS-PS2-3

A dropper to fill ink works because of which of the following?

• Friction

• Magnetic force

• Air pressure

• Electrostatic force

SI unit of force_________

When the driver applies brakes to a car the -----------------

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NGSS.MS-PS3-5

The force acting on a unit area on an object

• contact force

• non contact force

• pressure

• density

It is easier to cut vegetables with sharp end of knife rather than with its blunt end because

• Smaller area provides more pressure for the applied force

• smaller area provides less pressure for the applied force.

• none of the above

Two tyres of a tractor are very wide and huge because

• pressure increase when area increases

• pressure reduces when area increases

• none of the above

which of the following is not an example for effects of force?

• 
• 
• 
• 

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NGSS.MS-PS2-1

NGSS.MS-PS2-2