Energy Transformation
This type of energy transformation occurs when an electric kettle heats water.
electrical energy transforming into thermal energy
If an object moves at constant velocity, the forces acting on it are described as this.
balanced
Sound can’t be heard in a vacuum because sound waves need this.
medium
When turns of wire are removed from an electromagnet, this happens to its strength.
decreases
This is a pure substance because it has two different elements bonded.
compound
This type of energy is stored in an apple hanging from a tree.
potential energy
A student running 140 meters and pausing at 110 meters for 1 minute shows this type of motion.
A wave transfers this, but not matter.
energy
The order of light speed in different states of matter from fastest to slowest.
gas, liquid, solid
When water is heated, molecules gain this type of energy and move faster.
kinetic energy
When a ball is thrown straight up, its kinetic energy does this as it rises.
changes into potential energy
A rocket traveling at 30,000 m/s without accelerating experiences this type of force.
balanced force
When the wavelength of an EM wave decreases, both frequency and energy do this.
increase
This wave behavior explains why you can hear a radio through a cracked door.
diffraction
A student tests materials to see if they catch fire. This property is being tested.
combustibility
This type of heat transfer occurs when one end of a spoon in soup gets hot.
conduction
This causes a change in speed or direction.
unbalanced force
When sunlight hits tinted windows, it does these two things.
absorb and refract
This is true about positive and negative charges
they attract
Zn + HCl -> ZnCl2 + H2
false
This causes thermal energy to move in a fluid due to density changes.
convection
Two unequal forces on a block on a frictionless surface cause the block to move to the right.
More force to the right
Gamma rays have the most energy because they have this kind of wavelength.
short wavelength
These are the charges of subatomic particles: proton, neutron, and electron.
proton = +
neutron = neutral
electron = –
If Liquid A boils at 100°C and doesn’t bubble in acid, and B boils at 78°C and bubbles, what can be said about Liquid A?
high boiling point and not reactive