Energy
What type of energy is stored in batteries, food, or fossil fuels?
Chemical
Which type of heat transfer creates currents in air or liquids?
Convection
Produces a lot of energy, has less carbon emissions/pollution, takes up less space than solar/wind farms are all what?
Benefits of nuclear energy
What is the formula for speed?
Speed = distance / time
Which simple machine is a ramp?
Incline Plane
What type of energy travels through space in the form of waves
Electromagnetic/radiant (light)
Touching your hand to a metal chair outside is an example of which type of heat transfer?
conduction
What is the time it takes for half of a radioisotope to decay?
half-life
How is velocity different from speed?
Velocity includes a direction
Which simple machine is a broom?
Lever
When a ball rolls down a hill, it's potential energy is converted into what kind of energy?
Kinetic
When thermal energy is added to an object, the motion of the particles ________?
Increases
If you start with 10 grams of a radioisotope, how much remains after 1 half-life?
5 grams
What does stationary look like on a speed graph?
Straight horizontal line
How are inertia and mass related?
greater mass = more inertia
less mass = less inertia
Describe the energy transformation of a battery powered clock
Chemical to mechanical and sound
An item with a _________specific heat capacity will heat up and cool down fast.
low
A radioisotope has a half-life of 2 days. How long does it take to go through 4 half-lives?
8 days
What does deceleration look like on a graph?
Downward curved line
Which law states an object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an unbalanced force?
Newton's 1st law of motion
What does the law of conservation of energy state?
Energy is not created or destroyed but is transformed from one form to another.
What is the amount of heat required to raise the temperature 1oC for every 1 gram ?
specific heat capacity
What is the difference between fission and fusion?
Fission splits smaller nuclei into larger ones
Fusion combines large nuclei into smaller ones
Jack, Carl, Amy, and Jane are racing each other 100 meters. Jack runs it in 20 seconds, Carl in 21 seconds, Amy in 25 seconds, and Jane in 15 seconds. Who had the fastest speed?
Jane
According to Newton’s 3rd Law, what happens when you push on a wall?
he wall pushes back with an equal and opposite force