The Universe
Galaxies are categorized by
shape into elliptical, irregular, and spiral
what is the difference between speed and velocity?
speed does not include a direction
On your white board draw what no motion would look like on a distance time graph
flat horizontal line
energy of motion
kinetic energy
What is the energy we get from the sun called?
Radiant or Electromagnetic
main sequence, dwarfs, supergiants, giants
what is the formula for speed?
Speed = distance / time
without calculating how do you know an object is moving faster based on the graph
steepness of a line
stored energy or energy of position
potential energy
What energy transformation happens in photosynthesis?
Radiant/Electromagnetic to chemical
What is the name of the arm our solar system is on?
Orion Arm
If the distance is in kilometers and the time is in mins what is the unit for speed?
kilometers / minutes
What does acceleration look like on a distance time graph? Draw on your white board
a curved line
When do objects have the most potential energy?
What is the energy transformation that happens in a toaster?
electrical to thermal and radiant
Where are hot and bright stars found in the HR Diagram?
top left corner
Solve for speed: a car traveled 35 miles in 15 minutes
Unit matters!
2.333 miles/min
Draw a graph that shows constant speed away for 10 seconds, stopping for 5 seconds then returning to start for 10 seconds.
Up - flat - down
when Potential Energy goes up what happens to Kinetic Energy
what is the energy transformation that happens after you lunch and walk back to AIME?
chemical to mechanical/kinetic
What size of star will turn into a white dwarf at the end of its life?
low to medium mass star
Can you have negative speed? Why or why not?
No because negative relates to direction
what is the x axis of a distance time graph show?
As an object falls down towards the ground when is KE and PE equal?
In the middle or half way down.
What is the law of conservation of energy?
energy cannot be created nor destroyed only transformed