speed of waves
True or false
In a medium, two properties affect the wave speed – density and elasticity.
True
What is energy transformation?
it is the process of changing energy from one form to another.
what is the quality or condition of being hard called?
Hardness
What is an element?
A simple substance that cannot be broken down into smaller parts or changed into another substance.
Yes
where is wave speed usually found to be the fastest?
Solids - because of the tightly packed molecules
True or false
A bicycle converts potential energy to kinetic.
false.
From potential to mechanical then kinetic.
how much space an object or substance takes up in relation to the amount of matter in that object or substance
Density
What is an element made up of?
An atom
Do waves travel slower in gasses than in solids?
Yes
what is the formula to find the speed of waves?
Speed = Wavelength x Frequency
True or false?
An automobile's engine creates tiny explosions to release the energy from gasoline, which transforms into kinetic energy used to spin the car's wheels.
True
what is a measure of the ability of the material to conduct an electrical current?
Electrical conductivity
What is the table in which elements are catargorized?
The periodic table
what is the feel, appearance, or consistency of a surface or substance?
Texture
A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
500 m/s
True or false?
Nuclear energy is converted by the Sun into ultraviolet, infrared, and gamma energy, which are all kinds of electromagnetic energy.
True
what is the temperature at which a liquid turns into a solid called?
Freezing point
What are componds?
A material formed by chemically bonding two or more chemical elements.
Our bodies convert chemical energy in our food into _________ energy for us to move.
A wave has a wavelength of 0.5, and frequency of 0.0084. what is the speed?
0.0042 m/s
A fan is turned on. what type of energy transformation occurred?
electrical to mechanical
what is the ability of a solid, liquid, or gaseous chemical substance to dissolve in solvent and form a solution called?
Solubility
What are mixtures?
A physical combination of two or more substances that aren't chemically joined.
What is the ability of a substance to be stretched into a wire; distribution?
Ductility