potential/kinetic energy
what is kinetic energy?
energy of motion
A pot's handle gets really hot when it's on a stove
conduction
what is mechanical energy
energy possessed by an object due to both motion and position (motion is technically correct as well)
an object is still. balanced or unbalanced forces acting on it?
balanced
describe what a triple beam balance does and how to use it.
a scientific tool used to measure the weight of objects. you place the object, then increase weights (100s, 10s, 1s) until it's balanced and you know exactly how much the object weighs.
Does someone at the top or bottom of a roller coaster have more potential energy?
top
the sun's heat waves reach Earth and heat it up.
radiation
what energy transformation happens when a fan is turned on
electrical, mechanical, sound
what is the unit for force?
newtons (N)
which simple machine looks like a ramp?
an inclined plane!
Person A is going for a run. Person B is walking along a trail. Who has more kinetic energy?
person A
you step on the wood floor to cool your feet down.
conduction! direct contact
what energy transformation happens when someone turns a light switch on
(mechanical), electrical, light, (heat)
Ted pushes against a box with 500N. Rob pushes the same box in the opposite direction with 400N. What is the net force and who will the box move toward?
net force is 100N and the box will move TOWARD Rob
what is nikitha's favorite color?
blue :)
An archer pulls a bow back and then releases it to fire an arrow. Describe the energy transformation.
Pulling bow back - more and more potential energy
Release - kinetic energy
give an example of conduction, convection, and radiation that was NOT already said
conduction - heat transfers through direct contact
convection - warm and cool fluid/density changes
radiation - heat waves
what energy transformation takes place when video game is played (hint: batteries)
chemical, electrical, light, sound, heat
In a time/distance graph, what do steeper lines mean?
faster. steeper lines-less time for more distance
if an object is in constant motion, what does that look like on a graph?
If an object has high potential energy, how much kinetic energy does it have?
LOW kinetic energy; potential and kinetic are INVERSE of each other
what are convection currents?
the "cycles" of flow that occur as a result of convection. warm air rises while cool air takes its place, forming a circle; a "current"
what is chemical energy?
energy that results from a chemical reaction
ex: batteries
how do you measure rate of change on a graph?
calculate how much distance traveled per second (or whatever unit is given).
what sport is dhaanya involved in?
swimming!