WorksheetsSCIENCE FINAL REVIEW
Total questions: 21
Worksheet time: 11mins
what is the law of superposition
the law that shows rock layers (the older the layer the farther down it is)
the law that states that fossil fuels are in the stratum layer
the law that shows the hardness scale
its not a real law
how do you calculate half life
every time a half life passes the mass divides by 20
every time a half life passes the mass divides by seven
every time a half life passes the mass divides by five
every time a half life passes the mass divides by two (50g in a half life would be 25g)
What is seafloor spreading
animals morf
the formation of new areas of oceanic crust
the waves in the ocean get really big
The fish swim west
Define subduction
when layers move because of the earth inner core
volcano cause layers to change and the different sections
the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.
what plate boundaries cause earthquakes
Plates move away from one another at divergent boundaries. Plates move towards one another at convergent boundaries;
mid ocean ridge makes lava and causes earthquakes
volcano eruptions cause the divergent plane to move causing earthquakes
earthquakes happen because of earths inner core
what is the continental drift theory
Albert Einstein came up with the idea that a giant meteorite caused the continents to move apart
continents moved because of erosion
Alfred Wegener came up with the theory of continental drift, the Earth's continents were once joined together, but gradually moved apart over millions of years.
continental drift is the theory that earthquakes moved the continents because of constant moving
What is geothermal energy ?
energy from the constant movement of everything on earth
thermal energy generated and stored in the Earth, stored in magma underground convection currents ans causes the plates to move
currents of the ocean going north west south or east
plates being moved because of earhtquakes
which would fall faster in air, a brick or a parachute
both would fall at the same time
a brick because it is heavier and solid while a parachute resistance a person down and helps them fall easier
a parachute would fall faster
none of the above
what are balanced forces?
two forces acting in opposite directions on an object, Anytime there is a balanced force on an object, the object stays still or continues moving continues to move at the same speed and in a certain direction
tug of war
when people fall off Antarctica
two forces staying still
how can gravitational potential energy decrease
when a ball is in the air it goes up into space
when you don't throw a ball anywhere and it stays the same
when you throw a ball at the ground it stays there
when you throw a baseball in the air eventually it falls back down and decreases
what is convection
circular motion where the heat waves go u and the cold ones go down
when a put is warm and the warm air disappears in the molecule
circular motion that happens when warmer air or liquid which has faster moving molecules, making it less dense rises, while the cooler airor liquid drops down.
what state of matter does convection occur in?
it takes place in liquids and solids because convection can only travel in fluid particles so it can not go into solid matter
it takes place in solids
it takes place underground in the earth
it dissapeers in air
what is the law of conservation of mass?
mass can be created and can be destroyed
mass in an isolated system is neither created nor destroyed by chemical reactions o
the law doesn't exist
how do atomic masses vary moving through the periodic table?
mass increases right to left
mass increases up and down
atomic mass increases from left to right and from top to bottom of the Periodic Table.
mass doesn't increase
where are subatomic atoms found in an atom
they are the larger particle in the atom
they are found inside the atom
Subatomic particles are particles that are smaller than the atom.
the subatomic particles are see through
what is the difference between endothermic and exothermic reactions?
endothermic reaction pulls heat into an object or area, while an exothermic reaction expels heat.
endothermic expels heat and exothermic pulls heat
they both pull heat
they both expel heat
how do you identify the number of atoms of each element/compound in a chemical reaction.
Formulas of some compounds, with the number of atoms of each element in the molecule. The small 2 after an element tells you there are two atoms of that particular element in each molecule.
the formulas tell you that the subatomic particles are in the second formula
you dont identify the formulas
how do you identify the products and reactants in a chemical reaction.
the products are in the beginning of the equation
the reactants are at the end of the equation
the reactants at the are the chemicals you start with and the product is end answer
what are the three different states of matter and how they differ including molecular motion for each.
solid (tight particles), liquid (loose particles), and gas (no arrangement)
solid, fluid, liquid, and gas
solid is loose particle ans gas has tight particles
what is sublimation
When anything solid turns into a gas without first becoming liquid,
when anything liquid turns into a gas
when gas disappears because of the liquid
what are the four phases changes of state
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evaporation and melting
sublimation and disintegration, and showing up, and not being there
sublimation,Evaporation, Condensation, Freezing, Melting, & Deposition.
