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2nd exam SG
| Question | Answer |
|---|---|
| Which type of stress force produces reverse faults? | compression |
| The type of seismic waves that arrive at the surface first and move by compressing and expanding the ground like an accordion | P waves |
| In a strike-slip fault, the rocks on either side of the fault slip past each other sideways with little __. | up-or-down motion |
| The greater the mass of an object, ________. | the greater its inertia |
| The product of an object's mass and velocity is called ____. | momentum |
| The achievement of lifting a rocket off the ground and into space can be explained by Newton's ___ Law. | 3rd |
| In physical science, a push or a pull is called a(n) ___ | force |
| The SI unit for force is the ___. | newton |
| Balanced forces acting on an object ________ the motion. | never change |
| Speed equals distance divided by _____. | time |
| When you know both the speed and direction of an object's motion, you know the ____ | velocity of the object |
| You can show the motion of an object on a line graph in which you plot distance against ____. | time |
| The rate at which velocity changes is called ____. | Acceleration |
| A car approaching a red light is an example of ___ | deceleration |
| To determine the acceleration of an object, you must calculate the change in speed during each unit of ___. | time |
| If speed is measured in kilometers per hour and time is measured in hours, the unit of acceleration is _____. | kilometers per hour per hour or kilometers per hour squared |
| Total distance divided by total time is ______. | average speed |
| A place or object used for comparison to determine if something is in motion is called a ____. | reference point |
| On a distance -time graph, a horizontal line represents an object that is ______. | not moving at all; stopped |
| If you know the distance an object has traveled in a certain amount of time, you can determine ______. | the speed of the object |
| If the speed of an object does not change, the object is traveling at a _____ speed. | constant |
| Changing direction is an example of a type of ____. | acceleration |
| The moon accelerates because it is ______. | continuously changing direction |
| If you know a car traveled 300 km in 3 hours, you can calculate its ____. | average speed |
| If a bicyclist travels 48km in 4 hours, her average speed is ____. | 12 km/hr |
| 6.56 meters = _______ cm | 656 cm |
| "Kilo" is a prefix that means _____ | one thousand |
| A car travels 90 km in the first 2 hours of the trip. It continues to travel for 4 more hours and travels 210 km. What was the average speed of the car for the trip? | 50 km/hr |
| What is the formula for calculating acceleration? | acceleration = (final speed - initial speed) divided by time |
| All the different types of electromagnetic waves make up the _______. | electromagnetic spectrum |
| The distance light travels in a year is a ____. | light-year |
| A star's distance from Earth can be determined by using ___ | parallax |
| Name the 5 characteristics used to classify stars:_ | size, brightness, temperature, color, composition |
| The coolest stars are ____ in color. | Red |
| A star is "born" when _____ | nuclear fusion starts |
| The lifetime of a star depends on its ____. | mass |
| A supernova is the explosion of a dying ____ star. | high-mass |
| Eclipsing binary stars can sometimes be identified because they _____. | become dimmer at regular intervals |
| The Milky Way is an example of a(n) ___ galaxy. | spiral |
| According to Hubble's Law, the farther away a galaxy is, the ______________. | faster it is moving away from us. |
| Many large optical telescopes are located on mountain tops to be _____. | above part of the atmosphere. |
| The mysterious force that may be causing the expansion of the universe to accelerate is called ___. | dark energy |
| According to theory, in the future the universe will ___. | continue to expand. |
| The two most abundant gases in the atmosphere are __ and ____. | nitrogen and oxygen |
| Air has pressure because it has ___. | mass |
| Density is calculated by using the formula ____. | density = mass divided by volume |
| As you rise upwards in the atmosphere, air pressure _____. | decreases |
| The layers of the atmosphere are classified according to changes in ___. | temperature |
| The layer of our atmosphere in which weather occurs is the ____ | troposphere |
| Volcanic belts form along ____ | the boundaries of Earth's plates |
| The viscosity of magma depends upon its silica content and its _____. | temperature |
| In volcanic areas, groundwater heated by magma is a source of ___ | geothermal energy |
| The major ingredient of magma is _____. | silica |
| You can identify a substance or predict its behavior by using its ______. | chemical and physical properties. |
| Small earthquakes that occur around a volcano before an eruption are triggered by ____. | upward movement of magma |
| The ability to burn is an example of a ___ property. | physical |
| Volcanoes along converging oceanic plate boundaries may form ____. | an island arc |
| Several kilometers from a volcano, a geologist observes an old lava flow made up of dark-colored basalt rock. He infers that the lava must have had ___ viscosity. | low |
| When magma hardens in a volcano's pipe, the result will eventually be a land form called a ___. | volcanic neck |
| Most of the energy that heats Earth's atmosphere is ______. | infrared radiation |
| The total energy of motion in the particles of a substance is called ___. | thermal energy |
| Heat transfer between two substances that are in contact is called _____. | conduction |
| Heat from the sun reaches you by ____. | radiation |
| Most of the heating of the troposphere comes from _____. | convection. |
| Winds are caused by differences in ___-. | air pressure |
| Cool air tends to _____. | be more dense and flow under warm air. |
| Cold, dry air affecting the northern U.S. in winter often comes from ____,_____ air masses. | continental, polar |
| When a rapidly moving cold air mass overtakes a slow-moving warm air mass, the result is a(n) ____. | cold front |
| When a warm air mass and a cold air mass meet and neither can move the other, the result is a(n) ____. | stationary front |
| A major difference between cyclones and anticyclones is ______. | the direction of their winds |
| Weather associated with an anticyclone is generally ____ and ____. | dry and clear |
| Isobars are lines on a map joining places that have the same _____. | air pressure |
| On weather maps, a line with half circles indicates a ____. | warm front |
| What kind of weather would a continental tropical air mass that formed over northern Mexico bring to the southwestern U.S.? | hot and dry |
| When a warm air mass overtakes a cold air mass, it forms a(n) _____. | warm front |
| Thunderstorms form within ______ clouds. | large, cumulonimbus |
| Small lines at the end of the shaft that represents wind direction on a weather map indicate ______. | wind speed |
| Places shown on a weather map that have the same temperature are connected by ______. | isotherms |
| The prevailing westerlies, the major wind belts over the continental U.S., generally push air masses from ___to ____. | west to east |
Created by:
bwise
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