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Science Final
The science final test
89
Science
8th Grade
05/14/2014

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Cards

Term
What equation would you use to find the volume to find the rectangular box?
Definition
Volume = Length x Width x height
Term
If you poured three liquids (that do not mix completely) into a beaker, how would yo tell which one is the densest liquids?
Definition
The liquid that settles to the bottom is the densest liquid
Term
Which of the following is NOT an example of a physical change?
*shaping of the gold bar
*melting of the popsicle
*explosion of fireworks
*sanding of a piece of wood
Definition
Explosion of Fireworks
Term
Melting Crayons is an example of a ...
Definition
Physical Change
Term
What is the Process of obtaining information through the senses?
Definition
Observation
Term
What do we call a testable explanation based on observation?
Definition
Hypothesis
Term
All of the following are major types of galaxies EXCEPT....
*spiral galaxy
*irregular galaxy
*elliptical galaxy
*triangular galaxy
Definition
triangular galaxy
Term
How do scientists tell if a star is cool or warm?
Definition
by it's color
Term
New oceanic lithosphere forms as a result of...
Definition
sea-floor spreading
Term
According to the continental drift theory, a single, huge continent once existed called
Definition
Pangaea
Term
Each Planet moves around the sun in ...
Definition
a path the shape of an ellipse
Term
Earth's period of revolution is about...
Definition
1 year
Term
What happens during nuclear fusion in the sun?
Definition
Hydrogen nuclei combine to form helium
Term
The gravitational attraction between two objects increases if...
Definition
the distance between them increases and their mass decreases
Term
what happens if objects have more mass and move closer together?
Definition
Gravity between them increases
Term
What four letters represent the four bases?
Definition
A, T, G, C
Term
To be copied, a DNA molecule splits
Definition
down the middle
Term
DNA is made of subunits called what?
Definition
nucleotides
Term
What equation would you use to find the volume to find the rectangular box?
Definition
Volume = Length x Width x height
Term
If you poured three liquids (that do not mix completely) into a beaker, how would yo tell which one is the densest liquids?
Definition
The liquid that settles to the bottom is the densest liquid
Term
Which of the following is NOT an example of a physical change?
*shaping of the gold bar
*melting of the popsicle
*explosion of fireworks
*sanding of a piece of wood
Definition
Explosion of Fireworks
Term
Melting Crayons is an example of a ...
Definition
Physical Change
Term
What is the Process of obtaining information through the senses?
Definition
Observation
Term
What do we call a testable explanation based on observation?
Definition
Hypothesis
Term
All of the following are major types of galaxies EXCEPT....
*spiral galaxy
*irregular galaxy
*elliptical galaxy
*triangular galaxy
Definition
triangular galaxy
Term
How do scientists tell if a star is cool or warm?
Definition
by it's color
Term
New oceanic lithosphere forms as a result of...
Definition
sea-floor spreading
Term
According to the continental drift theory, a single, huge continent once existed called
Definition
Pangaea
Term
Each Planet moves around the sun in ...
Definition
a path the shape of an ellipse
Term
Earth's period of revolution is about...
Definition
1 year
Term
What happens during nuclear fusion in the sun?
Definition
Hydrogen nuclei combine to form helium
Term
The gravitational attraction between two objects increases if...
Definition
the distance between them increases and their mass decreases
Term
what happens if objects have more mass and move closer together?
Definition
Gravity between them increases
Term
What four letters represent the four bases?
Definition
A, T, G, C
Term
To be copied, a DNA molecule splits
Definition
down the middle
Term
DNA is made of subunits called what?
Definition
nucleotides
Term
A string of nucleotides that has information for making one trait is
Definition
a gene
Term
each set of three bases is a code for for...
Definition
a specific amino acid
Term
Along with sugar and a phosphate, what is the third part part of a nucleotide?
Definition
a base
Term
what does each gene have instructions for making?
Definition
a protein
Term
Which is the first step of DNA replication?
Definition
Two complete, identical strands of DNA pair up
Term
The largest mass extinction was in the
Definition
Precambrian time
Term
What are blocks of time the geological time scale called?
Definition
eras
Term
Volume
Definition
a measure of the amount of matter in objects
Term
inertia
Definition
the tendency of matter to resist changes in motion
Term
meniscus
Definition
the curve at a liquids surface
Term
matter
Definition
anything that has mass and takes us space
Term
mass
Definition
the amount of space occupied by an object
Term
Temperature
Definition
This can be found by measuring the speed of molecules
Term
states of matter
Definition
Ice, Water and Steam are kinds of these
Term
pressure
Definition
This increases when the amount of force per unit area increases
Term
change of state
Definition
this happens when soup boils
Term
weight
Definition
a measure of the gravitational force on objects
Term
cosmology
Definition
the study of the origin, structure, and future of the universe.
Term
black hole
Definition
an object so massive and dense that not even light can escape it's gravitational pull
Term
magnitude
Definition
the brightness of a star
Term
light- year
Definition
the distance that light travels in one year; about 9.5 trillion kilometers
Term
main sequence
Definition
the diagonal pattern on the H-R diagram where most stars appear
Term
atomic number
Definition
the number of protons
Term
chemical bond
Definition
an interaction that holds two atoms together
Term
valence electrons
Definition
an electron in the outermost energy level of an atom
Term
noble gasses
Definition
elements that have 8 valence electrons and normally do not form chemical bonds
Term
convergent boundary
Definition
where two plates collide
Term
divergent boundary
Definition
where two plates are moving away from each other
Term
transform boundary
Definition
where two plates are moving horizontally past each other
Term
convection
Definition
process of moving layers of rock by heating and cooling
Term
subduction
Definition
where denser oceanic lithosphere sinks beneath continental lithosphere
Term
crust
Definition
the outside layer of the earth
Term
tectonic plates
Definition
pieces of the lithosphere
Term
Pangaea
Definition
the last supercontinent
Term
revolution
Definition
one complete trip along an orbit
Term
orbit
Definition
the path of a body that travels around another body in space
Term
period of revolution
Definition
the amount of time it takes a body to complete a trip along an orbit
Term
rotation
Definition
the spin of a body on its axis
Term
core
Definition
Earth's central layer
Term
crust
Definition
the outer layer of earth
Term
mantle
Definition
the middle layer of Earth
Term
rotation
Definition
the spin of a planet on its axis
Term
revolution
Definition
one complete trip around the sun
Term
orbit
Definition
the path a planet follow when it travels around the sun
Term
ellipse
Definition
shape of the path a planet follows when it travels around the sun
Term
fossil
Definition
the remains or physical evidence of an organism preserved by geological processes
Term
absolute dating
Definition
any method of measuring the age of an object or event in years, such as the atomic half-life
Term
geological time scale
Definition
the standard method of dividing Earth's long history into parts
Term
relative dating
Definition
any method of determining whether an event or object is older or younger than others.
Term
plate tectonics
Definition
the theory that explains how large pieces of the Earth's crust move and change shapes
Term
paleozoic era
Definition
the era following Precambrian time; it means "ancient life"
Term
Mesozoic era
Definition
the era called the Age of Reptiles
Term
Cenozoic era
Definition
the era following the Mesozoic; it means "recent life"
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