1 / 7

DO NOW

DO NOW. Q1. Give 1 example of kinetic energy Q1. Give 3 examples of potential energy. DO NOW (ANSWERS). Q1. Give 1 example of kinetic energy: A moving car, a rolling ball, a galloping horse Q1. Give 3 examples of potential energy 1. Chemical potential energy in food or fuel

malia
Download Presentation

DO NOW

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DO NOW Q1. Give 1 example of kinetic energy Q1. Give 3 examples of potential energy

  2. DO NOW (ANSWERS) Q1. Give 1 example of kinetic energy: A moving car, a rolling ball, a galloping horse Q1. Give 3 examples of potential energy 1. Chemical potential energy in food or fuel 2. Elastic potential energy in a rubber band or a trampoline 3. Gravitational potential energy in a skydiver

  3. Energy Equations 1. For each of the energy equations below, give three examples of things which change energy in the way shown. KINETIC ENERGY  SOUND ENERGY (clapping, talking, playing a guitar) CHEMICAL ENERGY  HEAT ENERGY (Firework, match, coal fire) KINETIC ENERGY  HEAT ENERGY (brakes, skiing, sanding wood) ELECTRICAL ENERGY  HEAT ENERGY (heater, lamp, soldering iron) 2. State which energy changes are being described in the sentences below. e.g. ‘the water bubbled as it was heated on the stove’ For this sentence you could write ELECTRICAL ENERGY  HEAT ENERGY + SOUND ENERGY The wood crackled and flames appeared when the fire was lit. Chemical PE → heat + sound The window shattered when the brick hit it. Kinetic → sound The tyres screeched as the car came around the bend. Kinetic → sound The steam hissed out of the iron. Kinetic → sound The stone flew out of the catapult. Elastic PE → Kinetic The Space Shuttle rose slowly off the launch pad. Chemical PE → kinetic → gravitational PE. 3. This is a diagram of a hydroelectric power scheme. Water, which has been trapped behind a dam, flows down a slope. The moving water turns a generator, which makes electricity. Write an energy equation for this process. Some of the electricity generated is used to provide energy for an elevator in a building, which lifts people to the top of the building. Add in extra steps in your energy equation to show these extra energy changes. Gravitational PE → Kinetic → electrical → kinetic → gravitational PE 4. Write an energy equation for each of the pictures shown on this sheet. ELECTRICAL ENERGY  HEAT ENERGY ELECTRICAL ENERGY  HEAT ENERGY + sound energy

  4. Today: Graph activity

  5. Rachel and Stephen are moving with a constant speed since the slope of the line is constant. Rachel – 5 ms-1; Stephen – 3 ms-1; Kepa is accelerating. The slope is increasing so her speed is increasing.

  6. Rachel – Constant speed of 7 ms-1 for 3 s then a constant deceleration to rest in a further 7 s. Stephen – Constant acceleration from rest to 10 ms-1 in 10 s. Kepa – Constant acceleration from rest to 10 ms-1 in 5 s followed by a constant deceleration to rest in a further 5 s.

More Related