Working with Graphs (2)

Name:_________________________________Period:_______Date:_____________ Working with Graphs (2) 1. Answer the following questions based on the table below: Power Ratings of Household Appliances Appliance Clothes Dryer Toaster Refrigerator Color television Radio Clock Power (W)/hour 4,000 1,100 600 200 100 3 A. Which appliance uses the least amount of power? B. Which appliance uses twice the amount of power of a radio? C. If the refrigerator is on for 24 hours, how much power does it use in that time? D. How much more power does a clothes dryer need than a toaster? Name:_________________________________Period:_______Date:_____________ Velocity (m/s) 2. Use the graph below to answer the following questions: Time (seconds) A. What is the x-axis label, or independent variable? B. What relationship between velocity and time does the graph show? C. When the line is horizontal, or flat, is the velocity (increasing, decreasing, steady, or zero)? 3. Use the chart below to answer the following questions. U.S. Fuel Sources 8% 5% 44% 20% 23% Oil Coal Natural Gas Nuclear Others Name:_________________________________Period:_______Date:_____________ A. What percentage of U.S. energy relies on coal? B. What might happen to the percentage of use of nuclear and other fuel sources as the amount of oil, coal, and natural gas is depleted? C. What is the least used fuel source, not counting the Other category? D. What two fuel sources account for 43% of fuel sources used in the U.S.? 4. Use the graph below to answer the following questions: U.S. Electricity Generation by Source, 1950-2003 A. Which fuel source provided the most electricity in the year 2000? B. Which fuel source has been the most constant in terms of production of electricity from 1950-2000? Name:_________________________________Period:_______Date:_____________ C. In the year 1970, approximately how many Kilowatthours (in trillions) of electricity did petroleum and natural gas generate? 5. Answer the following questions based on the graph below. Distance in kilometers Average vs. Actual Speed 450 400 350 300 250 200 150 100 50 0 0 1 2 3 4 Time in Hours Average Actual A. What is the average speed after three hours? What is the actual speed? B. What is the independent variable? C. How does the line for actual speed differ from the line for average speed? 6. Identify which graph is represented by the following stories. A. I left my house, stopped to talk to my neighbors, and continued on to school. Name:_________________________________Period:_______Date:_____________ B. I left my house slowly, and when I realized I was late for school I sped up. 7. A. Is the velocity in this graph constant or increasing? B. If an object is changing its velocity, it is said to be ______________. 8. Use the graph below to answer the following questions: M oo n Pl ut o Ur an us Sa tu rn Ju pi te r M ar s M er cu ry 350 300 250 200 150 100 50 0 Ea rth Weight (lbs.) Weight on Different Planets Planets A. On which planets would you weigh the least? B. What two planets would you weight close to what you weight on Earth? C. If your mass is 80 kg on Earth, what is your mass on Jupiter? Name:_________________________________Period:_______Date:_____________ Answer key: 1. A. clock B. color television C. 14,400 W D. 2,900 W 2. A. time in seconds B. as time increases, velocity also increases C. steady 3. A. 87% B. they will increase C. nuclear D. coal and natural gas 4. A. coal B. hydroelectric power C. 5 trillion kilowatt hours 5. A. 250 km/hour is average, ~275 km/hr is actual B. time in hours C. the line for actual speed goes up and down while average speed line remains constant 6. A. ii B. i 7. A. increasing B. accelerating 8. A. Pluto B. Saturn and Uranus C. 80 kg- mass does not change!