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Q: According to the law of universal gravitation, as mass increases, gravity stays the sameincreasesdecreases. As distance increases, gravity decreasesincreasesstays the same. Question #2MultipleChoice
Score: Kepler's 1st law of planetary motion is called the law of _____. ellipsesmotionequal areasharmonics Question #3TextMultipleChoice Score: The sound of a police siren that is moving away has longerhighershorter wavelengths, and one that is approaching has lowershorterlonger wavelengths. Question #4MultipleChoice Score: The equal areas law is Kepler's 2nd law of planetary motion. It states that _____. a planet's orbit sweeps out equal areas in equal periods of timea planet's orbit sweeps out different areas but in equal periods of timea planet's orbit is ellipticala planet's distance is equal to the time it takes to orbit the Sun Question #5Matching Score: Match the science with the best description. 1. astronomy the study of weather and climate 2. geology the study of minerals and rocks 3. oceanography the study of the stars, planets, and galaxies 4. meteorology the study of water, mainly oceans Question #6TextMultipleChoice Score: Scientists' evidence for an expanding universe is called a redshiftyellowshiftgreenshiftblueshift because the light waves emitted by stars and galaxies are shifting toward the redgreenyellowblue end of the visible color spectrum. Question #7MultipleChoice Score: The earth is just the right size to retain our atmosphere. Our atmosphere is attracted by earth's _____. heatcompositiongravitymoon Question #8MultipleChoice Score: An object's tendency to maintain its current state of motion is called _____. inertiagravityaccretionforce Question #9MultipleChoice Score: Stellar evolution is _____. the process of planetary formationthe life cycle of a starthe death of a starhow comets form Question #10MultipleChoice Score: Earth's geochemical cycles remove and add materials, such as water and rock. The three main, interconnected geochemical cycles of earth are _____. water, rock, and tectonic cycleswater, rock, and carbon cycleswater, tectonic, and nitrogen cyclesrock, tectonic, and volcanic cycles Question #11MultipleChoice Score: Choose the answer that best completes this sentence: The moon may have contributed to the evolution of life from _____. its gravitational pullsea to landkeeping earth spinning on its axisits impact into earth Question #12TrueFalse Score: The big bang theory has finally answered one of the biggest questions of science—the origin of the universe. TrueFalse Question #13MultipleChoice Score: Which of the following statements best describes Kepler's law of ellipses? Each planet orbits the sun in an elliptical shape with the sun at one of the ellipse's two focal points.An ellipse has two focal points. The sun is at one focal point of an ellipse. The other focal point is the planet that orbits the sun.The planets orbit the sun in a perfect circle. The sun is an elliptical shape.Planets must orbit the sun in an elliptical shape because an ellipse has two focal points. Question #14MultipleChoice Score: Earth is the only planet able to support _____. an atmospherea cryospherea lithospherea biosphere Question #15TextMultipleChoice Score: Other planets besides the earth have a lithosphere, but none of them has slatesoilrock in their lithosphere, as earth does. Question #16MultipleChoice Score: If equal force were applied to a basketball and a baseball, which would travel further, according to Newton's 2nd law of motion? The basketball would go further because a greater mass allows for a greater increase in acceleration.The baseball would go further because less mass allows for a greater increase in acceleration.They would travel equal distances because equal amounts of force allows for an equal amount of acceleration.The basketball would go further because a greater mass allows for an increase in force. Question #17Matching Score: Match the theory with the best description. 1. big bang Theory about the origin of the universe that suggests the universe has and will continue to be at a steady, continuous state. 2. steady state Theory about the origin of the universe that suggests the universe is a never-ending cycle of expansion and contraction. 3. oscillating universe Theory that upholds the big bang Theory but suggests there was an extremely rapid expansion or inflation milliseconds after the big bang. 4. nebular Theory that suggests the origin of the universe started with an explosion and expansion of a very hot, dense, compact fireball. 5. inflation Theory about the origin of the solar system that suggests our Sun and planets formed from a cloud of dust and gas. 6. condensation Theory about the origin of the solar system that agrees with the nebular theory but stresses the importance of interstellar dust in planet formation. Question #18MultipleChoice Score: The discovery of cosmic microwave background radiation and primordial helium gas was scientific evidence supporting the _____. big bang theorynebular theorysteady state theoryoscillating universe theory Question #19MultipleChoice Score: According to Newton's 1st law of motion, called the law of inertia, if you kick a soccer ball on a field of grass, it will stop because _____. inertia makes it stopfriction from the grass makes it stopit won't stoponly you can make it stop Question #20MultipleChoice Score: Newton's 1st law of motion states that a moving object will go in a straight line unless an outside force changes this motion. What outside force prevents the planets from moving in a straight line into space? gravitymeteorite impactssupernovasnuclear fusion Question #21MultipleChoice Score: All of the celestial bodies of the solar system were said to have formed from _____. a nebular cloud of dust and gasthe protostardark matternuclear fusion Question #22TextMultipleChoice Score: Kepler's harmonic law states that the rootsquarecube of the orbital period of a planet around the Sun is proportional to the cuberootsquare of the planet's orbital radius. Question #23MultipleChoice Score: The big bang theory suggests that the universe is about _____. 300 million years old4.6 billion years old30 billion years old13 billion years old Question #24MultipleChoice Score: After the collapse of a nebular cloud, atoms begin gravitating together to form a condensed center. What happens next in the star formation process? The gravitational attraction pulls in more matter, causing the core to heat up, forming a protostar.Clouds of matter begin to rotate around the protostar and flatten into a disk-shape.Nuclear energy runs out and the star dies.One of the condensed regions collapses under the force of its own gravity. Question #25MultipleChoice Score: Cosmic microwave background radiation found uniformly spread throughout the universe is supposed to be _____. a heat imprint from the big crunchradio waves from distant galaxiesproof that the universe is expandinga heat or energy imprint from the big bang Question #26MultipleChoice Score: The earth is the 3rd planet from the Sun. It receives just the right amount of heat from the Sun, which contributes to the planet's life-supporting _____. atmosphere, water cycle, and climategravity, climate, and tectonic activityatmosphere, climate, and gravitywater cycle, evaporation, and atmosphere Question #27MultipleChoice Score: The scientific explanation that suggests the universe is expanding relies on two main concepts _____. the Doppler effect and redshiftredshift and blueshiftredshift and gravitational pullDoppler effect and quasars Question #28MultipleChoice Score: The Sun is the primary gravitational force in the solar system because _____. it's mass and distance both increase gravitational forceit's nuclear energy is more powerful than any other in the solar systemit emits the most amount of heat at great distancesit's the most massive object in the solar system Question #29MultipleChoice Score: Which law best describes why the planets are pulled toward the Sun and orbit it? Newton's law of universal gravitationKepler's law of ellipsesNewton's 2nd law of motionNewton's 3rd law of motion Question #30MultipleChoice Score: According to Newton's 3rd law of motion, an action creates _____. an accelerated reactionan equal actionan equal and opposite reactiona force of equal action Question #31MultipleChoice Score: A nebula, or swirling cloud of interstellar dust and gases, is seen. What happens next in the star formation process? Atoms begin to gravitate together to form a center.Small regions of this immense cloud begin to condense.A region collapses under the force of its own gravity.Nuclear fusion begins. Question #32MultipleChoice Score: The earth is composed of three different chemical layers: core, mantle and crust. The formation of these layers was from a process called _____. differentiationcondensationevaporationgravitation
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