Science Ms. Deraps 7th Midterm
|Describe the difference b/t temp. and heat|| Temp:Measures amount of kinetic energy. how much particles are moving.|
Heat: The transfer of energy to one place to another.
|Describe how temp. depends on k.e||Temp. is the averge amount of k.e, if there was no k.e there would be no temp. the amount of k.e goes up, temp. increases.|
|What tools and units are used to measure tempature?||Theremometer...Farenhiet....Celsius... Calvin for extreemmee temps.|
|how do changes in temp. affect matter?||Temp. affects particles which effect the state of matter. take energy away, particles move slower--->freeze. You give energy, particles move faster---> melt.|
|Describe what thermal expansion is and how it happens.||Thermal expansion is... as something gets warmer it expands. as a subtance expands particles are moving faster and need room to expandd.|
|Explain the units used to measure heat. And how big it is.|| Calorie:amount of energy to raise one gram of water by 1 degree celsius.|
Joule: 1 calorie=1.48 joules.
|What is S.H(specific heat), and why do some subtances change temp. more easily than others.||a-amount of energy to raise the temp...(amount of energy to raise 1 gram of water by 1 degree celsius.|
b-a substance with a high specfic heat value like water.. not onlly has to absorb a large quantity of energy for its temp. to decrease.
low s.h--> heats up faster.
Pan has low s.h so it heats up faster with water in it that has a high specific heat.
|compare and contrast three ways energy is transferd through heat.|| Convection-movement that transfers particles.|
radiation-transfers throught e.m waves.
Conduction and convection are only too that move through space.
|describe how matierals can be used to control the transfer of heat energy.|| Conductor= allows heat to transfer energy--low s.h.|
Insulator-reduces the transfer of heat.--high s.h
|Compare and contrast the 4 layers of the earth, include where they are, what their made of, and how big they are.|| innercore-closest to the middle..9000celsius...1300km...made of SOLID iron and nickel.(solid cause of pressure.)|
Outer core-9000celsius...2220km...made of LIQUID iron and nickel.
Mantel-4000celsius...2800km...made of molten rock.
Crust-were we live and where life is.
|Describe in detail how the crust moves.||convection currents in mantel. alllllwayyys moving. moves by magma in mantel, which moves the plates, which move the crust.|
|Compare and contrast the three types of boundries at the edge of the plates. and where they happend.|| convergant----><----- plates that hit eachother.creates fold. example utah(rockey mountains.)|
Divergant=<----- -----> move away. creates mid-ocean ridge. example(b/t north. amer. and african plate.)
Transform:------>. move past eachother. example cali. --
<------ sandandreas fault
|Name and decribe two ways in which volcanoes are formed.|| Subduction zones- one plate goes underneath froms magma chamber.|
Hotspots- magma underneath crust..burns crust..magma freezes.
|Compare and contrast 3 types of volcanoes.|| -Cindercone-Steepest,looks like a cone-2nd destructive.|
-shield-looks like a shield.lava just pourrs out-least destructive.
-composite-flat at bottom and tall at top.-most destructive.
all produced by pressure build ip in the mantle and change shape of the earth.;
|describe how earth quakes are measured; what scale is used and what instruments are used.|| sizmograph--measured by a richter scale.|
<--1--2--3--4--5--6---7--8--9--10--> use exponents. 1 to two--10x bigger.
|explain the theroy of continetal drift and why scientist belive in this happening.||Becuase at 1st the continents fit togather, and slowley drifted apart. why? because the plates are moving and the mantle is moving and the continents are attached to the plates.|
|what is the earths lithosphere||the crust and upper portion of the mantle|
|a zone where oceanic crust dives beneath crust is...||subduction zone.|
|Connvection currents rise in the air because cool air decends and hot air rises.||...|
|which method of energ transfers energy doesnt involve movement of matter||radiation.|
|which substance is best conductor of transfer energy as heat||iron|
|earth quake occur mostly at...||plat boundries|
|breakage of rock at a fault line releases..||seismic waves|
|transfer of fluids and gases||convection|
|waves that cause the most damage are...||surface waves|
|To figure of the magnaitude of a earth quake you the __________ scale||richtor|
|what happened in the ring of fire?||magma rose from subduction.|
|Volcanos like the 'hawaiin island' form by..||magma through crust..hot spots.|
|violent shaking during a earthquakes occurs at the....||epicenter|
|example; a lizard is laying out on a warm rock in the sun. its body is warmed by both....||radiation and conduction|
|the conetinetal crust is thickest beneath...||mountains|
|oceanic crust is thinner and more dense than the..||continetal crust.|
|movement of the ocean floor on either side of a mid-ocean ridge is called...||sea floor spreading.|
|hot liquid rock isss..||magma|