Energy
Define Energy
The ability to Work
Define Matter
Any substance that has mass and takes up space
What a causes Gravity?
Mass. Gravity is a distortion of time and space caused by an objects mass. All objects with mass have gravity
What forces must be balanced in order for a planet to retain an atmosphere?
The planet needs to have sufficient gravity and its surface cannot be too hot.
What is the oldest element?
Hydrogen
What is the ultimate source of energy on Earth?
The Sun
Define Thermal Energy
Energy created by the movement of particles (atoms), their movement produces heat
What two forces must be balanced for a stable orbit to occur?
Gravity and Velocity. There's a balance between one bodies gravity and another bodies velocity.
Compare and Contrast : Weather vs Climate
Weather - the daily state of the atmosphere
Climate - the average weather conditions in an area over a long period of time.
sqrt196
14
What is the formula for calculating potential energy?
PE = m x g x h
m = mass (kg)
g = gravity (9.8 m/s2)
h = height (m)
What are the three main ways heat is transferred in our universe?
Conduction, Convection and Radiation
What are the three criteria for an object to be considered a planet as set by the International Astronomical Union?
It is in orbit around the Sun.
It has sufficient mass to assume hydrostatic equilibrium (a nearly round shape).
It has "cleared the neighborhood" around its orbit.
How does warmer air behave?
When air is warmed, its particles spread out and rise up creating lower pressure systems
How would you conjugate Hablar in the second person singular in the present tense
Tu - Hablas
True or False : Energy conversions (changing from one form to another) can be 100% efficient under the right conditions
False: No Energy conversion is 100% efficient
At what temperature does water boil? (bonus points : give the temperature in each of the three major scales)
212°F
100 °C
373.15K
Why is the Sun at the Center of our solar system? Why do planets orbit the Sun?
It contains the most mass and therefore has the strongest gravity. The planets orbit because they have enough velocity to not get sucked in but aren't fast enough to fly away.
What causes wind?
Sunden changes in Air Pressure. High pressure systems move to areas of lower pressure and this movement of air drives air currents.
What does a conjunction do in a sentence?
Joins two phrases or clauses (and but or or)
Calculate the kinetic energy of an object with a mass of 2kg and a velocity of 5 m/s
KE = 1/2 m x v2
KE = 1/2 2 x 52
KE = 1/2 2 x 25
KE = 25 J
Convert 60°C to Kelvin
°C -> K, add (+) 273
60 + 273 = 333K
Describe the difference Mass and Weight
Mass is the amount of matter an object contains (same anywhere in the universe)
Weight is the force of gravity on an object (changes from planet to planet)
Why is the weather varied between Southern California and Northern California
*depends on quality of response
The Suns radiation heats Earth's surface unevenly (due to Earth's axis and rotation.) Some parts become hotter than others, which create convection currents and pressure systems. As these systems move and interact with one another, they bring material like air and water with them. This movement of material create the conditions for weather, like humidity wind and precipitation.
What town am I from?
Rocky Hill