Vocabulary
An object or material that limits the transfer of thermal energy. Insulator or conductor?
Insulator
Hitting a punching bag and the bag coming back towards you
Third law
What is the speed of an object that travels 81 meters in 9 seconds?
9 m/s
Natural gas is renewable or non renewable?
Non renewable
Give an example of energy transfer
Example where energy passes from one object, organism, or location to another, remaining in the same type of energy.
When an object such as a piece of metal gets heated up, it undergoes... expansion or contraction?
Expansion
A car increases speed from 15 m/s to 35 m/s in 5 seconds. What is its acceleration?
4 m/s2
Biomass is renewable or non renewable?
Renewable
Give an example of energy transformation
Example when one type of energy transforms into a different type.
The physical transfer process of thermal energy from a higher-temperature object to a lower-temperature object.
Thermal equilibrium
Kicking a ball and that your shoe flies off
First law
A train slows down from 30 m/s to 10 m/s in 10 seconds. What is its acceleration?
-2 m/s2
Geothermal energy is renewable or non renewable
Renewable
Give an example of transportation
An example where energy travels across a distance.
The transfer of thermal energy from one object to another object at lower temperature
Heat
The space shuttle sits completely still on the launchpad. Suddenly, the main engines ignite, shooting massive amounts of hot gas downward toward the ground with incredible force, which forces the heavy shuttle to lift upward into the sky. As the shuttle burns up its heavy fuel, its total mass becomes lighter and lighter, causing its upward acceleration to get faster and faster every second.
2nd and 3rd law
What is the distance that an object travels is it moves at 10 m/s for 6 seconds?
60 meters
True or false: radioactive substances last for so long, they can count as renewable energy
False - renewability doesn't depend on how long the energy source lasts for
Water is heated on a pot on the stove is transfer, transport, or transformation
Transfer
The total sum of the kinetic energies of each and every particle an object is composed of, depending on particle count and speed.
Thermal energy
Steph is driving her 1,200 kg car at a steady speed. Her backpack sits loosely on the passenger seat. Suddenly, a truck pulls out and Tania slams on the brakes. The car hits the truck and stops instantly.
During the impact, the backpack flies off the seat and hits the dashboard. Steph is thrown forward, but her seatbelt pulls back against her body to stop her. At the moment of collision, Steph's car crumples as it pushes the truck backward, while the truck delivers an equal, crushing blow right back into Steph's car.
Inertia (backpack and Steph flying off); action and reaction (truck gets pushed backward but car gets crumpled too)
If my plane is travelling 1900 km and it will take about 3 hours, what will be its average speed in km/hr?
633 km/h
True or false: does renewable energy provide energy as quickly as non renewable energy?
Explain how water is heated on a pot on the stove using radiation, conduction, and convection
Radiation of stove fire to pot
Conduction of hot pot to water
Convection in the water