6th Grade Science Study Guide – Flashcards

Unlock all answers in this set

Unlock answers
question
hypothesis
answer
An educated guess that attempts to explain an observation or answer a question
question
infer
answer
guess correctly, to find out by reasoning; to arrive at a conclusion on the basis of thought; to hint, suggest, imply
question
controlled experiment
answer
experiment that tests the effect of a single variable
question
variable
answer
something in an experiment that can change
question
independent variable
answer
variable that is changed in an experiment
question
dependent variable
answer
the variable that is measured in an experiment
question
constant
answer
variable that is not changed in an experiment
question
critical thinking
answer
Thinking that does not blindly accept arguments and conclusions
question
data
answer
the information gathered from observations.
question
Earth science
answer
The study of earth and space; includes geology, meteorology, astronomy, and oceanography
question
life science
answer
The study of living things
question
model
answer
represents an idea, event, or object to help people better understand it
question
physical science
answer
the study of matter and energy
question
science
answer
the study of the natural world
question
scientific law
answer
A theory that has been tested by and is consistent with generations of data
question
scientific theory
answer
A well tested concept that explains a wide range of observations
question
system
answer
an organized group of parts that work together to form a whole
question
technology
answer
tools and skills people use to meet their basic needs
question
measurement
answer
a quantity that has both a number and a unit
question
precision
answer
the exactness of a measurement
question
accuracy
answer
How close a measurement is to the true value
question
description
answer
an explanation of an observation
question
SI
answer
the international system of units
question
meter
answer
The basic SI unit of length
question
volume
answer
the amount of space an object takes up
question
mass
answer
the amount of matter in an object
question
kilogram
answer
SI unit for mass, one thousand grams
question
weight
answer
the vertical force exerted by a mass as a result of gravity
question
kelvin
answer
SI unit for temperature, - fundamental SI unit of temperature where zero degrees Kelvin is equal to absolute zero.
question
rate
answer
amount of change of one measurement in a given amount of time
question
table
answer
a set of data arranged in rows and columns
question
graph
answer
A diagram that shows how two variables are related.
question
line graph
answer
shows the relationship between two variables, shows change over time
question
bar graph
answer
a graph that uses horizontal or vertical bars to display data
question
circle graph
answer
A graph of data where the entire circle represents the whole or 100%, shows parts of a whole
question
estimation
answer
method of making an educated guess at a measurement, An approximate calculation of quantity
question
J.J. Thompson
answer
used the cathode ray tube to discover the electron
question
Lavoisier
answer
(1743-1794) father of modern chemistry - co discovered oxygen and hydrogen, introduced metric system, invented first periodic table. Beheaded in French Revolution
question
Ernest Rutherford
answer
British physicist discovered the nucleus, gold foil experiment- fired negative ions at thin sheet of gold foil, some particles were deflected almost as if it hit something solid
question
Chadwick
answer
discovered the neutron, introduced Law of Conservation of Matter
question
John Dalton
answer
discovered the atomic theory, or the idea that everything was made up of atoms, created first model of the atom
question
Periodic Table of Elements
answer
the scientific chart that contains an arrangement of all known elements into a particular order based upon the number of protons and other properties of each element.
question
How many known elements in the Periodic Table of Elements
answer
115
question
How many elements in the Periodic Table of Elements are naturally occuring
answer
90
question
Metals
answer
elements on the periodic table with high luster, good electrical conductivity, malleability, and loosely held valence electrons.
question
Non-Metals
answer
elements on the periodic table that are usually dull in appearance, poor conductors of heat and electricity, gases at room temperature
question
Transitional metals
answer
elements on the periodic table that are used because they have high melting points and are hard.
question
Semi-metals
answer
elements on the periodic table that have properties of both metals and nonmetals
question
Noble gases
answer
non-metallic elements on the periodic table which contain the most stable and nonreactive elements (also called the inert gases because they do not participate in many chemical reactions)
question
Atomic Number
answer
the number of protons in the nucleus of an atom
question
Atomic Mass
answer
total mass of the protons and neutrons in an atom, measured in atomic mass units
question
Chemical Symbol
answer
a one or two letter representation of an element, the abbreviation for the name of an element
question
Number of protons
answer
equals number of electrons
question
Number of neutrons
answer
Mass number - atomic number
question
Number of electrons
answer
equals the number of protons
question
Matter
answer
that which has mass and occupies space
question
Atoms
answer
the smallest unit of matter that has the characteristics of an element; consists of three main types of subatomic particles: protons neutrons and electrons.
question
Elements
answer
a molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions.
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New