• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/141

Click to flip

### 141 Cards in this Set

• Front
• Back
 The speed of light depends on the _______ it travels through. medium You can see yourself in a mirror because of the wave property called _______ . refelction Tsunamis have a large amount of energy because of their large _________. amplitude A place where molecules are far apart is a _________. rarefaction The speed of sound is about ___________. 340m/s __________ wave does not require a medium to travel through. electromagnetic Light and water waves are examples of this type of wave. transverse Interaction of various different types of waves is known as ________. interference You can hear sounds around the corner of a door due to the wave property called _________. diffraction When light bounces off a surface it is called __________. reflection These waves con be either transverse or compressional. mechanical A sound wave would be an example of this type of wave. compressional The pitch of a sound of a wave it its _______. frequency This is why light shines off a mirror. reflection The spreading out of waves around a barrier is called _____________. diffraction The changing of the speed of a wave it its ________. refraction In relation to sound waves which has a higher pitch...lower frequency or higher frequency? higher frequency Why do you see lighting before you hear thunder? light travels faster that sound A combination of waves forms a smaller wave, this is known as ___________. ` destructive interference What type of electromagnetic energy is used to diagnose broken bones? X-rays The distance from the crest or trough of a wave to the rest position? amplitude The distance between a point on a wave and the identical point on the next wave. wavelength The product of wavelength and frequency. wave speed The number of waves passing a given point per second. frequency What do you call all the water on the Earth's serface? hydrosphere The process of water vapor changing to a liquid is called __________. condesation How many oxygen molecules make up ozone? 3 In studying ocean currents of the world which is there more of cold or warm currents? warm What is the layer of the atmosphere closest to the Earth's surface? troposphere Why is the air above the equator always warmer than any place else on the Earth? Sun's direct angle What is the source of all energy in our atmosphere? sun These are known as windless zones at the equator. doldrums What effect is caused by the Earth's rotation? Coriolis Effect This connects points of equal temperature. isotherm What layer of the atmosphere would be called "Earth's Sunscreen?" ozone layer _____________ is the transfer of energy in the form of rays or waves. radiation Which layer of the atmosphere would contain electrically charged particles? ionosphere __________ is a violent whiriling wind that moves in a narrow path over land. tornado What is issued when servere weather conditions already exist? warning A person that studies and forecasts the weather using data gathered from any sources is a __________. meteorologist What type of front generally results in violent storms? cold The interaction of air, water, and ______ causes weather. sun A(n) _________ shows weather conditions at one specific location. station model In a station model where would the dew point be located? in the lower left cornr In a station model where would the temerature be located? In the upper left corner In a station model where would the berametric pressure be located? In the upper right corner In a station model how can you tell the wind direction? whatever way the wind barb is pointing If the barometric pressure is 35.6 on the station model what is the actual barometric pressure? 1035.6 What type of energy transfer occurs when the heat in the sand transfers to the person's feet? conduction Positions of constellations appear to change throughout the year because __________. Earth revolves around the sun About 90 percent of the stars in space are __________. main sequence The hottest stars in space are what color? blue-white A main sequence star becomes a _______ after it uses up the hydrogen in its core. giant A galaxy that is shaped similar to a football is called _________. elliptical The Big Bang theory of the formation and expansion of the universe is supported by observing ____________. red shift What is so dense that nothing, including light, can escape its gravity field? black holes What refers to the brightness of a star? magnitude A group of stars, gas, and dust held together by gravity is a ___________. galaxy These are seen as patterns of stars in the sky _________. constellations As Earth travels in its _______, different constellations are visible at different times of the year. orbit A measure of the amount of light given of a star is called its __________. absolute magnitude A measure of the amount of light received on Earth is a star's ____________. apparent magnitude A star begins as a large cloud of dust called a ________. nebula What states that the universe began expanding out of an enormous explosion about 15-20 billion years ago? Big Bang Theory A red shift in the spectrum of the light from an object indicates the object is moving ___________ you. away from The material in the center of a nebula that is about to become a star is called a ___________. protostar The star's color is dependent on its _________. tempuature Scientists categorize these by their shape ______. galaxies What is the most common element in a star? hydrogen The coolest stars in the sky are what color? red To show how rocks slowly change through time, scientist have created a model called _________. the rock cycle __________ is credited for reconizing rocks undergo profound changes which we call the rock cycle. James Hutton A process by which sediments are pressed together to form rock is called ________. compaction An igneous rock formed below Earth's surface is called ___________. intrusive igneous rocks Rock that have changed due to teperature and pressure are called _________. metamorphic rocks A mixture of minerals, organic matter, volcanic glass or other materials is called __________. rock When hot magma cools and hardens it forms __________ rocks. igneous Igneous rocks that form above Earth's surface is called _____________. extrusive igneous Rocks that form when sediments are pressed and cemented together, or when minerals form from solutions is called ______________ rocks. sedimentary How are metamorphic rocks classified? foliated and nonfoliated Sedimentary rocks are classified as _________,_________,and _____. organic, detrial, and chemical Marble is what type of rock? metamorphic Obsidian and granite are what types of rocks? igneous Coal and Chalk are what type of rock? sedimentary The resistance an object has to a change in its state of motion is called _________. inertia A push or pull on an object is called _________. force Any force that resists motion is called _________. friction Energy stored in an object is called _________. potential energy A rubber band powered car travels a distance of 4 meters in 3.2 seconds. What is the speed of the car? Recall Speed=distance/time. 1.25m/sec All the 8th grade Science Teachers are fleeing the building on the last day of school. The distance from the science wing to the front door is 140 meters. Coach Dickercon reaches the door in 30 seconds, Mrs. Todd reaches the door in 18 seconds, and Mrs. Kenjura reaches the door in 22 seconds. What is the speed of each teacher? Dickerson: 4.67m/sec Kenjura:6.36(repeating)m/sec Todd:7.7(repeating)m/sec ight travels 186,000 miles per second: the sun is approaximatley 93 million miles from Earth. How long does it take for a ray of sunlight to reach the Earth in seconds? In minutes? Hint: You must solve for time. 500 seconds 8.3(repeating) minutes DNA is found in all ____ cells A part of the DNA code on a chromosome is called _____ gene A combination of an organism's genetic makeup and the environment's effect on that makeup is called ___ phenotype An influence, such as sunlight and temperature, is an example of a(n) _______ influence external The study of ________ is called genetics heredity Gregor Mendel studied heredity by using _____ plants pea Dominant traits are seen in _______ generation each Each parent passes ____ allele(s) for a trait to their offspring one What is independent assortment and what scientist developed the principle? Alleles for one trait doesn't effect alleles for another trait; Mendel Compare and contrast adptation, extinction and evolution of a species Adaptation is the ability of an organism to change structurally or behaviorally to help it survive in its particular environment Extinction occurs when the last member of a species dies. Evolution is the change in genetics of a species over time. What is the difference between a genotype and a phenotype? Genotype: Genetic makeup Phenotype: Observable product of genetic makeup and environment's influences By selecting and breeding plants with desired ________, modern corn was developed. traits Traits are a result of _______ information in DNA coded passing a trait from parents to offspring is ______ heredity The different forms of a gene are each called a(n) _________ allele The youngest rocks on the ocean floor are located __________. mid ocean ridges Plates of the lithosphere float on the __________. athensophere The result of a plate movement can be seen at ______________. plate techtonics Collision of the Indo-Australian Plate and the Eurasian Plate from the _________. Himalaya The presence of these on several continets supports the hypothesis of continental drift __________. fossils and rocks The hypothesis that continents have slowly moved to their current locationis called ________________. continenal drift Plates move apart at ______________ boundaries. divergent Alignment of iron minerals in rocks as they form shows that Earth's ______________ has reversed itself several times in the past. magnetic feild A single supercontinent was once called __________. Pangea Plates slide past each other at _____________. transform boundaries The boundarybetween two plates moving together is called a __________. convergent boundary Seafloor spreading occurs because _________ rises to the Earth's surface. molten material Continetal drift states that the continent have moved to their current position quickly or slowly?` slowly What type of currents inside the Earth drive plate motion? convection currents Differences in _________ cause hot, plastic like rock in the asthensophere to rise to the surface. density To complete a convection current, the rising material must eventually __________ Earth. cool and sink to the The Andes mountains in South America formed at a _______ boundary convergent Active volcanoes are most likles to form at __________ boundaries. convergent (ocean, continental) What froms when two continental plates collide? mountains What in California is a transform boundary? San Andreas Fault Two ocean plates colliding form a _____________ zone. subduction Homozygous for a trait means an organism has __________________ for a given trait 2 same alleles Heterozygous for a trait means an organism has ____________ for a given trait 2 different allele A model (chart) that helps predict genetic makeup of an offspring is called __________ Punette Square X and Y-chromosomes are ____ chromosomes sex What is natural selection? When the adapted organisms are selected naturally to survive and increase in numbers; can produce new organisms or new species Over generations few adaptations take place which result in better defenses, escaping predators, and increasing an organism's numbers T or F? F--it's MANY not few In studying heredity, predicted outcomes always match actual outcomes T or F? F--it's sometimes, not always Recessive traits are always shown in an organism's offspring T or F? F--DOMINANT, not recessive The principle of independent assortment states that a parent passes only one allele for a trait to their offspring T or F? F--Segregation, not principle of independent assortment Dominant alleles will show their effect on the phenotype when they are present T or F? T A TT (tall) plant is crossed with a tt (short) What percentage of the offspring will be tall? 100% A heterzygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR) What percentage of the offspring will be homozygous (RR)? 50% What type of rock is Granite? igneous What type of rock is Chalk? sedimentary