renewable energy
nonrenewable energy
forces
more forces
motion
100

what is energy which a body possesses by virtue of being in motion.

kinetic energy

100

what is a liquid mixture of hydrocarbons

petroleum 

100

what is a force that is applied to an object by a person or another object. 

applied force

100

what refers to the force generated by two surfaces that contacts and slide against each other.

frictional forces 

100

what is anything that moves in a circle

rotary motion 

200

what is radiant light and heat from the Sun.

Solar energy

200

what is a compound of hydrogen and carbon

hyrdocarbon
200

what is a natural phenomenon by which all things with mass or energy

gravitational force

200

what is called a restoring force because the force exerted by the spring is always in the opposite direction to the displacement

spring force

200

which means any motion that has no fixed pattern

irregular motion 

300

what is the heat from the Earth.

geothermal energy

300

what is a naturally occurring hydrocarbon gas mixture

natural gas

300

what is the component of a contact force that is perpendicular to the surface that an object contacts

normal force

300

what is The attractive or repulsive interaction between any two charged objects

electrical forces

300

 what is the change in position of an object with respect to its surroundings in a given interval of time

motion

400

what refers to the process of creating electricity using the wind

wind energy

400

what is formed if dead plant matter decays into peat

coal

400

what are in opposition to the relative motion of an object as it passes through the air

air resistance forces

400

what is a consequence of the electromagnetic force

magnetic forces

400

what is anything that moves in a straight line

Linear Motion

500

what is the total mass of organisms in a given area or volume.

biomass energy

500

what is the energy released during nuclear fission or fusion

nuclear energy

500

what may be described as the pulling force transmitted axially by the means of a string,

tension force

500

what is the component of a contact force that is perpendicular to the surface that an object contacts

normal forces

500

what kind of motion moves back and forth.

Oscillating Motion