Bellringer Notes 01/07/2016 to 02/25/2016

Transcription

1 Bellringer Notes 01/07/2016 to 02/25/2016 Bellringer 01/07/2016 Examine the following scene and identify who s statement best describes the forces on the canoe. 20 N Upstream 15 N Downstream Robert Forces are unbalanced and the canoe is moving upstream at constant speed. Michelle Forces are unbalanced, canoe is moving upstream at an increasing speed. Clarissa Forces are balanced, canoe is moving upstream at a constant speed. Jarell Forces are balanced, the canoe is not moving. Bellringer 01/08/2016 Draw the following graphs and describe the SPEED/MOTION of each. STOPPED CONSTANT SPEED INCREASING SPEED DECREASING SPEED Bellringer 01/11/2016 The RIDGE Way Discussion Bellringer 01/12/2016 Bellringer Test Today 11/05/2015 to 01/06/2016

2 Bellringer 01/13/2016 A roller coaster is hard to stop because it has a lot of inertia. Use Newton s 1 st Law (Law of Inertia) to explain why you feel tossed around when a roller coaster goes over a hill or through a loop. (use academic vocabulary!) Remember Inertia is the tendency of all matter to resist a change in motion. Both the roller coaster and riders have inertia. When a car turns or stops quickly, a rider continues to move at the same speed and in the same direction that the coaster was moving. Bellringer 01/14/2016 Copy the following statements into your Science Journal and decide if the statement describes speed (S), velocity (V) or acceleration (A). UNDERLINE the word or words that helped you make that choice. 1. A dog runs on the sidewalk at 9 mi/hr. Speed 2. A student walks an average of 5km /hr west for 12 blocks. Velocity 3. A bus travels east from San Antonio to Houston going 70 mph. Velocity 4. A bicyclist takes a curved, scenic ride through the park going 10 m/s/s. Acceleration 5. Some motorcycles can go from 0 to 60 mi/hr in 4 seconds. Acceleration 6. An airplane takes off northwest from Dallas to Amarillo. Acceleration 7. The gray whale travels an average of 120km per day as it migrates. Speed Bellringer 01/15/2016 Please pick up a ½ sheet on atomic structure. Complete THEN glue in your Science Journal. ELECTRON CLOUD NUCLEUS ELECTRON NEUTRON PROTON Bellringer 01/19/2016 A bowling ball with a mass 7.25 kg is dropped from 10 meters, it accelerates 9.8 m/s 2. What is the force that it will hit the ground? F = 7.25kg * 9.8 m/s 2 = 71.05N A marble with a mass of 8 grams is dropped from 10 meters, it accelerates at 9.8 m/s 2. (8 grams =.008kg) What is the force it will hit the ground? F =.008kg * 9.8 m/s 2 = N

3 Bellringer 01/20/2016 Pick up a ½ sheet on Newton s Laws from the lab desk. Complete, THEN glue into your Science Journal. Bellringer 01/21/2016 Pick up a ½ sheet on determining Force, Motion and Acceleration from the lab desk. Complete, THEN glue into your Science Journal. Bellringer 01/22/2016 Test today. Speed, Velocity Acceleration and Newton s 3 Laws of Motion Bellringer 01/25/2016 Bellringer 01/26/2016 What grade do you plan to achieve for: 1. The 4 th six weeks grading period? 2. The 2 nd semester? How do you plan on accomplishing these goals? Bellringer 01/27/2016 Provide 3 examples of why Alfred Wegener developed his theory of Continental Drift. 1. Shapes of the continents fit together like pieces of a jigsaw puzzle. 2. The geology and age of mountain ranges on different continents are a perfect match. 3. Matching plant and animal fossils occur in Africa, South America and other continents. 4. Large coal, oil and gas deposits are located in both the Arctic and Antarctica (these were once tropical)

4 Bellringer 01/28/2016 What ares plate tectonic boundaries called that move apart from each other? DIVERGENT What features does it create? OCEAN RIDGES, RIFT VALLEYS, NEW OCEAN CRUST Give an example. MID-ATLANTIC RIDGE, ICELAND RIFT VALLEY Bellringer 02/01/2016 Identify the three Plate Boundaries shown below: What geologic/crustal feature does each create? Earthquakes Mid-Ocean Ridges Volcanoes Bellringer 02/02/2016 Draw and complete the graphic organizer in your Journal.

5 BellRinger 02/03/2016 Newton s 2 nd Law: Force = mass x acceleration (F=ma) 1. What force is needed to accelerate a box with a mass of 100kg to an acceleration rate of 5m/s 2? F = 100kg * 5m/s 2 F = 500 N 2. A force of 10N is applied to a ball with a mass of 2kg. What is the acceleration rate? a = 10 N 2kg a = 5 m/s 2 3. A force of 100N is being applied to a bike that is accelerating at a rate of 5m/s 2. What is the mass of the bike? m = 100 N 5m/s 2 m = 20 kg BellRinger 02/04/2016 Identify a geologic/crustal feature created by each of the following boundaries: TRANSFORM = Major Earthquake DIVERGENT = Rift Valley CONVERGENT with Subduction = & Mid Ocean Ridge Volcanic Mountains Bellringer 02/05/2016 Identify each part of the chemical equation: CONVERGENT = Folded Mountains Bellringer 02/09/2016 What do contour lines on a topographic map represent? Contour lines on a topo map connect points that are of the same elevation measured from sea level. Why do contour lines almost never cross or touch? Since each contour line is a different elevation point, one contour line cannot be at two different elevations.

6 Bellringer 02/10/2016 In yesterday s lab, Mapping the Mountain, your second and third drawing may have looked like this. Why did your lines start to indent like the ones on the west side of this map? The V / U formed as you modeled erosion occurring. This changed the relief of that area. Contour lines that cross a valley are V shaped. V points to higher elevation. In a stream or river valley the V always points upstream. Bellringer 02/11/2016 Please pick up a ½ sheet form the lab desk comparing topographic maps. Complete, THEN GLUE into your Science Journal. 1. Which drawing is most accurate? B 2. Explain why you chose that drawing and not the others. B shows a river flowing between two steep canyon walls. A shows a river flowing downhill. C shows a river flowing across canyon walls not between them. Bellringer 02/12/2016 Sketch the following topographic maps in your Science Journal: 1. An area with 3 different peaks of at least 200 ft. 2. A hill of 50 feet next to a depression 3. A hill with a steep slope on the north and a gradual slope on the south 4. A mountain with a river flowing down it 5. A canyon with a river flowing at the bottom Bellringer 02/16/ people hiked to the top of the hill shown in this map. Each hiker started at the same elevation but took a different route. 1. At what elevation did they begin their hike? 180 meters 2. Compare the steepness and distance each hiker hiked. Hiker B shortest distance, very steep slope (contour lines close)

7 Hiker A started on a gradual slope and ended steep slope, but traveled farther than hiker B Hiker C longest hike but most gradual slope as contour lines farthest apart. 3. Which path would experience the greatest amount of weathering from heavy weathering over time? Why? The path hiker B took would experience most weathering from rainfall because it had the steepest slope. The water flowing down the hill closest to bottom will have the greatest amount of kinetic energy. Potential energy greatest at top (gravity). Bellringer 02/17/2016 Please pick up a ½ sheet from the lab desk on acceleration. Complete the questions and THEN GLUE into your Science Journal. 1. A car waits at a red light. 2. A ROLLER COASTER TRAVELS DOWN A TALL HILL. 3. A RUNNER TAKES OF AT THE BEGINNING OF A RACE. 4. An escalator move at a constant speed. 5. A rocket ship sits on the launch pad preparing for takeoff. 6. A CAROUSEL SPINS AT A CONSTANT SPEED. 7. AN ELEVATOR SLOWS DOWN AS IT REACHES THE TOP FLOOR. 8. A BASKETBALL BOUNCES OFF THE BACKBOARD. Bellringer 02/18/2016 Please pick up a ½ sheet from the lab desk on plate tectonic boundaries. Complete the questions and THEN GLUE into your Science Journal. Bellringer 02/19/2016 Please pick up a ½ sheet from the lab desk comparing acceleration. Complete the questions and THEN GLUE into your Science Journal. Bellringer 02/22/2016 The wood has a mass of grams and a volume of 155 cm 3. Calculate the density & identify the type of wood: Mass = Volume = 155 Type of Wood Density Bamboo 0.35 g/cm 3 Pine 0.51 g/cm 3 Maple 0.70 g/cm 3 Oak 0.75 g/cm 3 Mahogany 0.85 g/cm 3

8 Bellringer 02/23/2016 A student measures the force acting on a boat and the boat s acceleration. The student's data are shown below. FORCE (N) ACCELERATION (m/s) Based on the recorded observations, what is the mass of the boat in kilograms? 12 / 0.6 = 20 kg Bellringer 02/24/2016 Pick up the ½ sheet from the lab desk on plate tectonics. Complete, THEN GLUE into your Science Journal. GEOLOGIC EVENT CONVERGENT DIVERGENT TRANSFORM Ex. Rift valley 1 Mid-ocean ridge 2 Mountain 3 Earthquake 4 Trench 5 subduction zone Bellringer 02/25/2016 Create the chart below and describe and draw convection that occurs in the Earth s atmosphere.