C165 WGU Integrated Physical Sciences. Top Exam Questions with accurate answers, graded A+

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C165 WGU Integrated Physical Sciences. Top Exam Questions with accurate answers, graded A+ Earth's outer core is liquid MOSTLY because of its - temperature Some large rivers, such as the MS Rive... r, form a delta where they meet the ocean, with land forming that extends into the sea. The formation of the delta is the result of erosion upstream where the flow is energetic and _____ where the flow is less rapid. - deposition Which type of rock is formed when sand, silt, clay, gravel, and cobbles become physically cemented or chemically fused together into hard rock? - Sedimentary Which force caused the hydrogen, helium, and lithium formed from the big bang to collect and form stars, planets, and other objects, as well as to form the elements other than hydrogen making up these objects? - Gravity Which process generates the energy that stars emit? - Fusion of hydrogen or other small nuclei to form larger nuclei Which effect is NOT caused by gravity? - A planet's atmosphere retaining thermal energy Which property characterizes the outer planets compared to the inner planets? - Gaseous and less dense When it is winter in New York City, which season is it in New Zealand, which is in Earth's Southern Hemisphere? - Summer The hottest part of Earth's interior is its ____. - inner core A meander in a river develops primarily from _____. - erosion on the side of the river where flow is faster and deposition on the opposite side. Many cycles of water getting into a rock and expanding by freezing have produced large cracks. This is an example of __________. - physical weathering The dust bowl occurred during the 1930s in the Midwest when a drought killed most of the crops in the region. Which agent of erosion was most important in causing the loss of the loose, dry soil left behind? - Wind Which statement about glaciers is the MOST accurate? - Glaciers flow and reshape their surroundings by erosion, weathering, and deposition. Which conditions are needed for a sand dune to form? - Lots of loose sand, an obstacle, wind What is an example of a mineral? - Calcite (composed of calcium carbonate) A geologist notices that four layers of rock are stacked directly on top of each other. The geologist labels the top layer as #1 and the bottom layer as #4. Which layer is the oldest? - #4 Which statement about fossils is correct? - The fossil record is incomplete because most organisms simply die and decay. What does the term Pangaea refer to? - The landmass that all of Earth's continents were once joined together to form At which location are volcanoes and strong earthquakes likely? - At boundaries between converging tectonic plates Which kind of plate boundary occurs where the plates slide past each other? - Transform Which layer of Earth's atmosphere has the lowest density? - Exosphere In which layer of Earth's atmosphere do storms and other weather phenomena occur? - Troposphere The atmospheric pressure meteorologists refer to in speaking of weather is __________. - the force from the air divided by the area on which it acts correct The trade winds are prevailing winds that blow over long distances. Their paths curve to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. Which process causes their paths to curve? - Earth spinning on its axis Which mechanism causes the motion of air that leads to convection cells? - Heated air being pushed up and colder air sinking A hydroelectric power plan converts the energy from flowing water in rivers into electric power. Water exists on Earth in all three states of matter as it makes its way through the water cycle. What is the main driving force for the water cycle? - The sun by causing evaporation Which states of matter of water can be involved in the hydrologic cycle? - All three- solid, liquid, and gas Which natural body or area of water accounts for MOST of Earth's water? - Oceans What is groundwater? - Water that soaks into the soil What is the cause of a hurricane? - Warm ocean water producing an upflow of warm, moist air In winter, the prevailing winds from west to east pass over the relatively warm waters of the Great Lakes. At Watertown, NY, on the eastern edge of Lake Ontario, the land rises, and the winds force warm, moist air upward. Which kind of winter weather would this make more likely in Watertown when the wind from the west is strong and the air is cold? - Snowstorms What happens in an area where there is an anticyclone? - The air pressure is higher, and sinking cold air reduces cloud cover. When a cold front moves into an area with warmer air, what are the likely consequences? - Warm air being pushed upward, which may produce precipitation What is the MOST abundant greenhouse gas in Earth's atmosphere? - Water vapor What is a source of greenhouse gases? - Deforestation Which of the following is NOT a property of matter? - It has the capacity to do work and cause change. Which subatomic particle is located outside the nucleus? - Electrons Which subatomic particle has approximately the same mass as the proton? - The neutron What is shared or transferred when a chemical bond is formed? - Valence electrons How is a compound formed? - Electrons are transferred or shared between atoms. Which of the following is an element? - Copper A liquid of unknown composition is heated. The liquid evaporates, and a white powder is left behind. Was the unknown substance a pure substance or a mixture? - Mixture Which of the following is NOT an organic compound? - Graphite (contains pure carbon bonded in sheets) In what state is matter compressible? - Gas In what state is the motion of particles lowest? - Solid Why do liquids pour? - Because particles of matter slide past one another in the liquid state Sugar forms a mixture with water. Is this a chemical change or a physical change? - A physical change Which type of change occurs when water evaporates off a sidewalk? - A physical change H2O + CO2 → H2CO3 Is the following change a physical change or a chemical change? - Chemical How could a zinc ion with a charge of plus two (Zn+2) be converted to an electrically neutral zinc atom? - By the addition of two electrons Which type of chemical bond results in the formation of ions? - Ionic bond Silver ions (Ag+) and chloride ions (Cl-) react to form silver chloride (AgCl): Ag+(aq) + Cl-(aq) → AgCl Which type of bond holds the silver and chloride ions together in silver chloride? - Ionic bond Which type of chemical bond holds two atoms together in a molecule? - Covalent bond Which element has 37 protons? - Rb Which of the following elements will have properties MOST similar to sulfur (S)? - O What type of element tends to lose electrons? - Metal Which of the following elements is a nonmetal? - Oxygen Which type of element is located toward the left on the periodic table? - Metals How many protons does a lead (Pb) atom have? - 82 Which of the following may change during a physical change? - The spacing between atoms or molecules Hydrogen (H2) and chlorine (Cl2) can react to form hydrochloric acid according to the following balanced chemical equation: H2 + Cl2 → 2HCl 2 g + 70 g = ? If 2 g of H2 and 70 g of Cl2 molecules react, what mass of HCl will form? - 72g Is heat absorbed or released when a gas condenses? - Heat is released when a gas condenses. correct Why does steam burn skin? - Water vapor releases heat as it condenses on the skin, which damages the tissue. Which of the following is an example of a substance evaporating? - Water turns to steam when it hits a hot stovetop. A car is moving forward, and its brakes are being applied. Which statement is true? - The car's velocity is forward, and its acceleration is backward. Which statement describes inertia? - Inertia is an object's tendency to remain stationary. You are pushing a file cabinet across a floor in a straight line at a constant speed. What can you correctly conclude about the forces acting on the file cabinet? - The force that you are exerting on the file cabinet is equal and opposite to the force that friction is exerting on it. You are seated in an airplane, facing forward. As you sip your coffee, the apple that has been sitting motionless on the level table in front of you suddenly rolls to your right. You know that the airplane _______ - has accelerated toward the left. What does the mass of an object measure? - The object's resistance to being accelerated Why might a hockey puck slow down as it slides along the ice? - The ice is applying a force in the opposite direction. What is the force that keeps an astronaut on the surface of the moon instead of floating in space? - Gravity What is the force that slows down a person falling with a parachute? - Air resistance If the distance between two objects increases, the force of gravity between them - decreases. A car decreases its speed from 40 mph to 20 mph. Its linear momentum _____. - is hal [Show More]

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