quiz science prep1

The electromagnet is used in making the ...................... .

• calculator

• electric bell

• microscope

• night vision system

The ....................... is an effect that attempts to change the object state from being static to motion or vice versa.

• force

• chemicals

• Earth

• Sun

An object's ..................... is the amount of earth's attraction to that object.

• mass

• weight

• size

• shape

If the earth's gravitational acceleration in a place is 9.8 m/ $s^2$ , then the weight of a 0.3 kg mass ball is .......... . 

• 2.94 N

• 2.94 kg

• 3.4 N

• 3.4 kg

The four fundamental forces of nature are: 

• Electromagnetism, Gravity, Strong Nuclear, Weak Nuclear
• Gravity, Strong Nuclear, Weak Nuclear, Medium Nuclear
• Normal Force, Force due to gravity, Magnetism, Nuclear 
• Nuclear, Electricity, Gravity, Atomic 

When you kick a static ball with your foot, a force acts on the ball which changes the ............................... .

• direction of the motion of the ball

• state of the ball into motion

• mass of the ball

• first and second choice only

...................... is the scientist who discovered the Earth's gravity.

• Planck

• Newton

• Archimedes

• Coulomb

If the mass of an object is 2kg and the Earth's gravitational acceleration is 10 m/ $\sec^2$  , the object's weight equals............ .

• 0.2 newton

• 2 newton

• 20 kg

• 20 newton

The weight of an object is measured in ..................... .

• kilogram

• coulomb

• newton

• m/ $\sec^2$

........................ is a technological application on inertia forces.

• Car tires

• Contraction and relaxation of muscles

• Safety belts

• none of the above