Power
What unit is power measured in?
Watt (W)
What unit is work measured in?
Joules
What is the SI unit for time?
seconds
A roller coaster at the top of the hill has what type of energy?
PE
What is a Tsunami?
A series of large waves caused by seismic activity.
What is the formula for Power?
P = W/t
If a bear pushes a tree as hard as it can to get berries out of the tree, but no berries fall and the tree is not moved. Has the bear done any work?
No, no displacment.
Convert 527.5 kW to W.
527,500 W
What type of energy is mechanical energy?
Kinetic Energy
What causes a Tsunami? (Hint: General)
Seismic Waves
If 150 J of work was done in 5 seconds, how much power was generated?
30 W
W = F * d
F = N
d = m
What should you do first when trying to solve a problem?
Find out what you are given/what you are looking for.
What is the correct formula AND units for KE?
1/2 m * v^2
m = kg
v = m/s
As a wave approaches shore, what decreases?
Speed & Wavelength
What does a Watt stand for?
1 J / 1 s
If I move a table 4 meters using 500 N of force, how much work have I done?
2,000 J
What is 1 kg * m^2 / s^2
a JOULE (J)
What is the formula AND units for each variable for Potential Energy/GPE?
PE = mgh
m = kg
g = m/s^2
h = m
Where do Tsunami's usually occur at in the ocean?
Along plate boundaries
275 W of power was generated in 2.5 seconds. How much work was needed?
687.5 J
What do humans use to amplify the amount of work they can do?
Machines
What is Newton's 1st Law of Motion?`
Law of Inertia: an object at rest will stay at rest unless acted upon by an unbalanced force.
A 1.5 kg ball is thrown at a speed of 25 m/s. What is the ball's KE?
468.75 J
What is going on in the mantle that causes plate movement? You need to EXPLAIN the process.
Convection currents, less dense material rises and cools, once cooled it becomes more dense and sinks.