Vocab
ability to cause change in matter
energy
path along which electrons flow
electric circuit
piece of clear material that bends, or refracts, light rays
lens
What happens when you unscrew a light bulb in a series circuit
all the lights go out
Most of Earth's energy comes from the
Sun
material that slows the flow of electrons
resistor
bending of light rays
refraction
attraction or repulsion of electric charges
electric force
which of the following is not an example of a release of chemical energy
bouncing a ball
using batteries
burning wood
digesting food
bouncing a ball
Which of the following describes how sound travels in space
sound is more intense
sound bounces off of Earth and other planets
sound cannot travel
sound travels faster
sound cannot travel
speed with which sound waves move
pitch
flow of electrons
electric current
the result of a gain or loss of electrons
electric charge
which of the following is an advantage that an electromagnet has over a regular magnet
it attracts more types of materials
it can be turned on and off
it requires an electrician
opposite are attracted to each other
it can be turned on and off
How do bodies maintain a constant body temperature
convert thermal energy into mechanical energy
covert mechanical energy into potential energy
convert chemical energy into thermal energy
convert kinetic energy into potential energy
convert chemical energy into thermal energy
light bouncing off of an object
reflection
energy an object has because of its location or its condition
potential energy
loudness of a sound
volume
which of the following is true of people who are farsighted
they do not need glasses to read the fine print
they use concave lenses to correct their vision
they use convex lenses to correct their vision
they use conduction to correct their vision
use convex lenses
Radiators in homes transfer heat by
Radiation
material that doesn't carry electrons
insulator
energy of motion
kinetic energy
iron bar with a coil wrapped around it that becomes a magnet when electric current flows through it
electromagnet
if you grab the handle of a pot on a stove, you will experience
radiation
conduction
convection
insulation
conduction
Electric force is like gravitational force because-
electrons don't move in any direction
both forces depend on distance
electrons move in the same direction
electric force increases when objects are far apart
both forces depend on distance