The following represent the FCAT Science vocabulary utilized in the first semester of Integrated Science I.



mass: A measurement of the quantity of matter found in an object.

The mass of a raisin is about one gram.



accuracy- compares a measurement to the real or accepted value

When NASA builds spaceships they have to use a high degree of accuracy so their spaceships work better.


First Law of Thermodynamics - States that the increase in thermal energy of a system equals the work done on the system plus the heat added to the system

If thermal energy flows from a warm object to a cool object, the first law of thermodynamics is proved.



Dependent Variable- A dependent variable is a factor that changes as a result of changes in other variables.

In this experiment, the amount of growth of the plants is the dependent variable because its value changes depending on changes in other variables.



Entropy: A measure of how spread out or dispersed energy is.

The entropy increased over time due to the spreading out of particles.



Conduction - transfer of thermal energy by collisions between particles in matter at a higher temperature and at a lower temperature.

In the winter you can wrap yourself in a coat and scarves to prevent conduction.


Convection - transfer of thermal energy in a fluid from one place to another.

The vegetables in the pot were moved by means of convection.



Precision - describes how closely measurements are to each other and how carefully the measurements are to each other.

When dealing with important measurements, ore should be meticulous and use a high degree of precision.


Mass Number - the some of the protons and neutrons contained in the nucleus of an atom

The Oxygen atom has eight protons and eight neutrons, therefore the mass number is 16.



Isotopes - atoms of the same element that have different numbers of neutrons.

Two isotopes that are both sulfur atoms could have the usual 16 neutrons or 15 neutrons.



Conservation of Mass - If an object changes form in a chemical change, the object has the same amount of mass as it did before.

If you burn a log, according to the Law of Conservation of Mass, the mass of the log before it is burned will be the same as it after it’s burned.



Thermal Energy - Sum of the kinetic and potential energy of the particlesn in an object. Thermal energy is transferred by conduction and radiation.

”All of the energy, kinetic and potential together is called thermal energy.”



heat of fusion - The amount of energy required to change 1 KG of a solid substance into a liquid substance.

When anything melts, it’s using heat of fusion



Kelvin - SI unit of temperature, one degree kelvin = one degree celsius - 273 degrees, a change of one degree kelvin is the same change as one degree celsius.

"By subtracting 273 from a temperature in kelvin converts the temperature to celsius."



Compound - The substance formed when two or more substances of equal porportion combine

If you mix sodium and chloride you make up a substance called salt, which is a compound.




Variable: Factor that can cause a change in the results of an experiment.

The number was unknown so it was replaced with a variable.



Independent variable - a changing factor that effects the measure of another variable.

If you manipulate the independent variable a certain way the dependent variable will have a positive change.



Atomic Number - determined by the number of protons in an atom’s nucleus.

Carbon has an atomic number of six, because there are six protons in the nucleus



Heat of Vaporization - the amount of energy required for 1kg of boiling water to become a gas. It is also the amount of enery released during condensation.

212 degrees is the heat of vaporization for water.



neutron - is a neutral particle composed of quarks located in the nucleus of an atom

When we split the neutron we could see the neutrons through the electron microscope.



Independent variable - a changing factor that affects the measure of another variable.

In the experiment, the independent variable was the amount of water given to the baby mice.