Which of the following statements could be considered scientific statements ? 1. There is water on the surface of Mars. 2. The universe contains atoms we will never detect. It is wrong to cheat. O A. C. 1 2, and 3 are all scientific O B. None of the statements is scientific O C. A. Only 1 is scientific
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- Speed = distance / time. The letter "c" is used to represent the speed of light. c = d / t Assuming that the difference in the light travel time between the two dates was 7.6 minutes and that 1.00 AU = 150,000,000 km determine the speed of light. a. 299,000,000 km/s b. 299,000,000 m/s c. 299,000 AU/minute d. 299 AU/sWhich is a scientific hypothesis? Select one: a.atoms are the smallest matter particles b.the universe is one of many universes c.Einstein is the top physicist of our century d.all of these answers.5. Cesar reads about the big bang theory, which explains that the universe expanded as theresult of an explosion. He wants to evaluate whether this theory is a good one. Whichstatement is a characteristic of a good theory? A. It is the idea of only one scientist.B. It does not change as time passes.C. It is not supported by scientific evidence.D. It changes with new observations made by astronomers.
- REVIEW atch the terms with the definitions. E astronomy .1) A. characterized by a completed round of events 2) star B. the theory that the Earth is the center of our universe 3) planet C. a large solid body in space that revolves about a star 4) geocentric D. a gaseous body that shines by its own light and emits heat A E. the science that investigates motions, physical make-up, distances, and other characteristics of all objects in space, including Earth 5) cyclical Il in the blanks. .6) "Star law" is the literal meaning of the word 1.7) Astronomy made gains as recognized science during Europe's or revival of learning. 1.8) Sumerian observers plotted the movements of our Sun, Moon, and other planets by dividing the sky into and made planets reverse 1.9) Ptolemy's theory that the existence of themselves at certain points on their journeys around Earth was incorrect. Choose the best answers. 1.10) A D Which two ways haye people found astronomy to be useful to their lives? A. navigationAn astronomical unit a.is the average distance from the Earth to the Sun. b.is about 150 million kilometres. c.is measured using radar signals bouncing off Venus. d.has units of distance. e.all of the mentioned choices. Galileo made many discoveries. Which one of these is not attributed to him? a.that the Moon has mountains, valleys and craters b.that the Sun has imperfections known as sunspots c.that four small points of light orbit the planet Jupiter d.the invention of the telescope e.that Venus shows a complete cycle of phases Which one of these statements describes why the planet Venus is much warmer than Earth? a.Venus has a denser and deeper atmosphere. b.It is closer to the Sun than Earth. c.It experienced a 'runaway greenhouse effect' long ago. d.It produces more carbon dioxide than is absorbed by the surface. e.all of the mentioned statementsPart I. We will leam in this class that the distance from the Earth to the Sun is approximately 1AU = 150,000,000 kilometers. a. Convert this number to meters (1 kilometer = 10° meters) and express it using scientific notation: 150000000000 meters How else might you express this number? (Millions, billions, etc. ?) b. A car on the highway drives at 55 mph = 25 meters per second. How long would it take to drive to the Sun? (Assuming you have a car that works in outer space.) Use the equation distance = velocity x time, or time = distance / velocity. Time = distance/velocity = , seconds (don't forget to use scientific notation.) How many days?. _days How many years?. years Does the answer surprise you?
- I hope you answer this:) 1. Ancient civilizations observed and kept track of daily movement of heavenly bodies. Which one is NOT the reason for this? a. navigation purposes b. time keeping c. annual cultural cycles d. agricultural cycles 2. What Kepler's Law of Planetary Motion is related to the Newton's Law of Motion based from the statement below: The statement: "Since the planets move on ellipses they are continually accelerating." a. Law of Ellipses and Law of Acceleration b. Law of Ellipses and Law of Inertia c. Law of Equal Areas and Law of Interaction d. Law of Period and Law of Inertia e. Law of Period and Law of Acceleration 3. Edwi Hubble proposed a way to organize galaxies in 1920. How are galaxies classified? a. color of stars b. shape of galaxy c. age of stars d. composition of stars e. diameter of galaxy 4. Find the magnifying power (M) and the length (L) of a simple telescope with 30-inches focal length of the objective and 2 inches focal length of the eyepiece.…1. Calculate the angle a person needs to lean from the vertical when 1. walking a 14 m (radius) circular track at 22 mins per mile, and Enter to 2 significant figures Angle with respect to the vertical = 0.85 X No, that's not the correct answer. O 2. running at 4 min per mile. Enter to 2 significant figures Angle with respect to the vertical = 6.8 Use 1 mile = 1609.4 m Sense-making: Do your results for the leaning angle during walking agree with your observations about people walking on circular tracks?1. Based on the book Grand Design by Hawking and Mlodinow in the Chapter 3 entitled What is Reality, answer the following:a. How did classical science define the physical world?b. What is the limitation of this definition of the physical world?c. How did modern science expound on the definition of the physical world?d. What are the elements of a good model?
- 1. How can physics help us gain a greater understanding of the interconnectedness of everything in the universe? 2. What is your intended career field? How might physics be used (either directly or indirectly) in your future work? 3. How can physics connect seemingly unrelated objects and phenomena?1. What is an astronomical unit (AU)? How many meters is one AU? 2. How many seconds are in one year? 3. Are the planets accelerating as they orbit the Sun? If so, what force is acting on them to cause the acceleration? Be specific.After completing this Lecture Tutorial, students should be able to: distinguish between scientific hypotheses and nonscientific ideas. Part 1: Comprehension of Hypotheses A scientific hypothesis needs to (1) be supported by the majority of current data and (2) be testable. An alien on Earth is wondering why a rubber ball falls back down to the ground after it is thrown into the air. It comes up with several ideas about the ball. a. Gravity is pulling the ball to the ground. b. A mystical force that cannot be measured is pushing the ball down. c. Earth's magnetic field is pulling on the rubber ball. 1. Which statement is NOT a hypothesis because it is not testable? a b c 2. Which statement is NOT a hypothesis because it is not supported by current data? a b c 3. Which statement IS a scientific hypothesis? a b c Part 2: Application to Dinosaur Extinction Below are possible scenarios explaining the extinction of the dinosaurs. a. Dinosaurs were killed off by a virus. b. A large meteorite…