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10 questions
Which of the following is not a form of potential energy?
Heat
Chemical
Elastic
Nuclear
The energy we receive from the sun is in the form of:
electrical and sound energy
heat and nuclear energy
electrical and light energy
heat and light energy
The energy needed to make a car move along a flat road, to launch a rocket into outer space and to operate a small calculater is converted from:
kinetic energy
chemical potential energy
thermal (heat) energy
gravitational potential energy
When a bicycle skids to a stop, its kinetic energy is transformed into mostly:
heat and sound
potential energy
sound energy
heat and light
The faster an object moves:
the more potential energy it has
the more kinetic energy it has
the slower its particles vibrate
the cooler it gets
Which would be the most appropriate description of how energy is distrubuted when a torch is turned on?
70% light energy, 30% thermal energy
70% thermal energy, 30% electrical energy
65% light energy, 20% thermal energy
40% thermal energy, 55% light energy
Which object has the highest gravitational potential energy?
a boy on a trampoline who is touching the mat, but not yet bounced
a girl who has stretched a hair elastic 20cm
a boy who has dropped a ball from a height of 1m
a girl who has bounced on a trampoline and risen into the air by 150cm
When you switch on a televsion, all of the available electrical energy is converted into light and sound. TRUE or FALSE?
True
False
Gravitational potential is when an object is MOVING or falling. TRUE or FALSE?
True
False
Fireworks are an example of the following energy types
light
heat
sound
all of the above
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