B. Energy can change from one form to another. Describe the energy conversions in the following scenes. (1 point) i. A kid falling out of a tree
ii. A scout rubbing sticks together to start a fire
iii. A man running a kerosene heater

i.

A kid falling out of a tree - Gravitational Potential energy to Kinetic energy

ii.

A scout rubbing sticks together to start a fire - Kinetic energy to Heat energy

iii.

A man running a kerosene heater - Chemical Potential energy to Heat energy

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.