FORCES AND ENERGY

Which of the following refers to the force that pulls object toward each other?

• friction

• gravity

• mass

• weight

Which of the following unit is used to express weight?

• kg

• m

• N

• km/h

The force of attraction that exist between the moon and Earth is _______________ ?

• friction

• gravity

• mass

• weight

The following can reduce friction EXCEPT _____________

• grease

• oil

• sand

• water

Which of the following will be directly affected if you travel from Earth to the moon?

• air resistance

• friction

• mass

• weight

It refers to the ability to do work

Which of the following shows potential energy?

• 
• 
• 
• 

identify three (3) INCORRECT statements.

• Radiant energy is also known as HEAT energy.

• Chemical energy is STORED energy.

• Sound energy is brought about by HEAT waves.

• Kinetic energy is energy in MOTION.

• The change of energy from one form to another is called ENERGY TRANSPORTAION.

Which of the following energy is present in a moving object?

• chemical energy

• kinetic energy

• nuclear energy

• potential energy

Which of the following best describes the energy transformation in the picture?

• Light energy is being transformed to heat energy.

• Mechanical energy is being transformed into electrical energy.

• Chemical energy is being transformed into light and heat energy.

• Electrical energy is being transformed into heat energy and mechanical energy.