science exam flashcards
the variable being measured during an experiment is know as
dependent variable
if an atoms loses two electrons what would its charge be?
+2
during which step of the scientific method should you look for patterns in the data and make a chart
analyze data
along the edges of plates all rocks can be heated and squeezed into this type of rock
metamorphic rock
what are the main types of rock
metamorphic
igneous
sedimentary
occurs when magma hardens into igneous rock, occurs during the formation of metamorphic rock, and can occur at or below earths surface
crystallization
causes of this are intense heat, intense pressure, and how watery chemicals
metamorphism
this type of rock forms below earths surface
intrusive
this igneous rock texture is the result of magma cooling slowly over a period of time and then cooling very quickly
porphyritic
these igneous rocks are dense and dark colored
basaltic
changes that take place in a rock during metamorphism can be…
in the form of the rock
in the composition of the rock
the result of tectonic activity
this type of metamorphic rock forms because of extreme pressure or when minerals with with different compositions separate to produce alternating light and dark bands
foliated
what’s the order of of the formation of sedimentary rocks
erosion breaks down rocks into sediments
sediments are transported by wind or ice to a new location
sediment is deposed
sediments are lithified
what are the typed of detrital sedimentary rocks
conglomerate, sandstone, and shale
these sedimentary rocks form from the remains of once living things
organic
which of these does not contribute to the characteristic of a sedimentary rock?
- the source of the sediment
- the way the sediment was moved
- the amount of pressure present during compaction of the sediments
- the conditions under which the sediment was decomposited
the amount of pressure present during the compaction of the sediments
how could u determine if a sedimentary rock is organic
look for fossils
test the hydrochloric acid and look for bubbles
halite (rock salt) is an example of which type of sedimentary rock
chemical
a mixture of one or more minerals, rock fragments, volcanic glass, organic matter, or other natural materials
rock
rock that has changed because of changes in temp and pressure or the presence of hot watery fluids
metamorphic rock
rock that is made up of combinations of different types of sediment
sedimentary rock
rock that forms when magma cools and solidifies
igneous rocks
loose fragments of rock, minerals, and organic material that result from natural processes
sediments
which of the following is a common rock forming mineral?
- sand
- calcium
- Quartz
- diamond
Quartz
what indicates the process that causes rocks to change from one type to another because of heat and pressure
metamorphism
what indicates the process that causes the formation of rocks like sandstone and conglomerate
lithification
how melted material beneath earths surface
magma
molten rock that flows from volcanoes or fissures onto earths surface
lava
the process by which the volume and porosity of a sediment is decreased by the weight of overlying sediments
compaction
the process in which minerals precipitate into pore spaces between sediment grains and bind sediments together to form rock
cementation
explain why intrusive igneous rocks are usually coarse grained compared extrusive which are usually fine grained
intrusive are coarse because they are not exposed to air which makes them cool slower than extrusive
list the two types of metamorphism
heat and pressure
how watery fluids
how do rocks with a glassy texture form
the rock solidifies so fast that mineral crystals do not have time to form
who realized that rocks undergo changes through long periods of time after observing rocks at Siccar Point
James Hutton
if a rock is made completely of shell fragments that you can see
coquina
the mass of one proton equals
1 amu or the mass of one neutron
jj Thompson discovered electrons using what experiment
cathode ray experiment
which scientist discovered the nucleus
Rutherford
which of these accurately describes the current atomic model
electrons surround the nucleus in electron clouds
in a neutral atom, the atomic number equals what
the number of protons
the number of electrons
which of these is not given on the periodic table
- atomic #
- atomic mass
- mass #
- element symbol
mass #
these are very reactive elements that only have one electron in their outer shell
alkali metal
what is a group of atoms connected by bonds
molecule
a type of mixture in which the components are not evenly mixed, but do not settle if left undisturbed
heterogeneous
muddy water is an example of which type of mixture
suspension
mixtures can be separated using what
physical means
soluble in water is an example of what
physical change
a change in matter from one form to another without changing the chemical properties
physical change
melting is an example of what
physical change
perishable is an example of what
chemical property
which of these is not a sign of a chemical change
melting
what state of matter has particles with the lowest energy
solid
true or false
there are only two elements that are liquid at room temp
true
what has a fixed volume but not shape
liquid
what has particles that move in a skiing or sliding motion
liquid
what two things could you mix together to make a solution
salt and water
anything that has mass and takes up space
matter
the tiny building blocks of matter made up of protons, neutrons, and electrons
atom
a substance made up of only one type of atom and that cannot be broke down into simpler substances by normal chemical means
element
an atom with the same number of protons but a different number of neutrons
isotope