Updated Yr 9 Exam Sem 2 Revision Guide 2024 Checklist.pdf

Year 9 Science Semester 2 Exam Checklist 2024 Topics in Exam: Term 2 and 3 Modules Carbon Light and Body Cycle Sound...

Year 9 Science Semester 2 Exam Checklist 2024 Topics in Exam: Term 2 and 3 Modules Carbon Light and Body Cycle Sound Coordination o Carbon spheres and fluxes o Waves o Homeostasis o Photosynthesis and o Electromagnetic spectrum o The nervous system respiration o Properties of light o The endocrine system o Food chains and webs o Properties of sound o Negative feedback o Fossil fuels and combustion Exam Details Answer all questions in the question booklet provided. Total Marks: 80 Total Time: 90 minutes There is no official reading time allocated for the exam. You may begin writing in the booklet from the beginning of the exam. It is recommended that you spend a few minutes looking through the sections of the exam to familiarise yourself with each section of the exam. Students will require a ruler and protractor. Students may use a calculator if required. An English dictionary may be requested. Use of other support materials is not allowed unless specifically stated. Additional space is provided at the back of the booklet. Please label each answer clearly with the appropriate question number. The examination consists of three sections: SECTION A Consists of 20 multiple choice questions. Select the best answer. It is recommended to spend approximately 20 minutes in this section. SECTION B Consists of short and extended response questions. This also consists of data-based questions, where you will be required to analyse data, form conclusions and evaluate the practical design. Make sure you include all working and use appropriate units where necessary.  Carbon Cycle Stile Module 3: The Carbon Cycle Oxford Chapter 6 – 6.1, 6.2 By the end of this topic, you should be able to: Carbon Spheres State and apply the law of conservation of mass and outline that matter cycles through the environment using Carbon as an example Describe how carbon moves between the biosphere, atmosphere, hydrosphere and geosphere. o Identify the fast and slow cycles in the carbon cycle. o Name and identify the 4 carbon spheres Movement of Carbon Outline how producers form energy rich organic compounds from simple carbon compounds via photosynthesis. o Write and balance chemical equations showing the chemical reaction for photosynthesis. Outline how carbon dioxide is produced by respiration in living organisms and is released into the atmosphere. o Write and balance chemical equations showing the chemical reaction for respiration. Explain how carbon compounds are passed through food chains via feeding. o Interpret, explain and construct food chains and outline the difference organism’s role within the cycle. o Outline how carbon dioxide and methane are released to the environment through decay by decomposers. Fossil Fuels Describe how incomplete decomposition leads to the formation of fossil fuels over time. Outline how combustion of fossil fuels releases carbon into the atmosphere. o Predict the products of complete and incomplete combustion reactions using word equations. o Write and balance combustion reactions with organic materials like fossil fuels. o Explain that combustion reactions release energy and are classified as exothermic. Compare the electricity generation from coal and gas compared to solar and wind. o Compare renewable vs non-renewable resources.  Light and Sound Stile Module 4: Light and Sound Oxford Chapter 7 – 7.2, 7.3, 7.7, 7.8, 7.9, 7.10 By the end of this topic, you should be able to: Waves Define a wave in terms of transfer of energy without transfer of matter. Classify a wave as transverse or longitudinal according to the movement of matter. Describe and label the properties of a wave including wavelength, frequency, and amplitude. Light Describe how visible light is one part of a larger electromagnetic spectrum. Explain that light is a transfer of energy through vibrations in the electric and magnetic fields. Describe the properties of light including colour and brightness. o Explain how the colour spectrum represents different energies of light. o Describe how the colour of an object depends on the transmission and reflection of light. Distinguish between transparent, translucent and opaque substances, and luminous and reflective objects.  State the law of reflection. o In a ray diagram, describe, draw and label the normal, the incoming, and reflected angles of light rays. o Predict the angle of a reflection given the angle of incidence and draw ray diagrams to represent rays of incidence and rays of reflection. o Describe the incoming and reflected rays when reflected off curved mirrors. o Predict the image produced from regular and diffuse reflection.  Describe how refraction occurs when light slows down or speeds up when moving between transparent substances o Determine whether a light ray will be bent towards or away from the normal when it enters or leaves a transparent substance. o Describe, draw and label angles of incidence and angles of refraction as light enters or leaves different substances. o Distinguish between a convex or concave lens. o Describe and draw the path of a light ray when passing through a convex or a concave lens. Describe how lenses are used to allow the functioning of the eye Sound Recognise that sound is a transfer of energy through a medium by compressions and rarefactions within the medium.  o Describe the relationship between frequency and pitch of a sound. o Describe the relationship between amplitude and volume of a sound. Calculate how long it takes for sound to travel across distances given the speed of sound. o Describe how echoes are produced by reflections of sound waves. o Apply the concept of the speed and reflection of sound to concepts such as echolocation, SONAR and Ultrasound.  Body Coordination and Homeostasis Stile Module 5: Homeostasis and Body Coordination Oxford Chapter 2 – 2.1, 2.2, 2.3, 2.4, 2.6, 2.7, 2.8 By the end of this topic, you should be able to: Homeostasis Define homeostasis Describe how the body detects and responds to changes to the internal and external environment. The Nervous System Describe function of a nerve cell. o Draw and label the structure of a nerve cell (motor neuron) and explain the role of each part.  o Describe how electrical impulses are used to send messages along neuron pathways and neurotransmitters are used to send messages across synapses. o Describe the role of neurotransmitters in sending and controlling nerve impulses. Explain how the nervous system responds to stimuli from the environment using the stimulus-response model. o Interpret or model diagrams of stimulus-response models for both new and familiar feedback models. o Explain the role of the receptors, command center and effectors in responding to stimuli. Describe the importance of a reflex arc in protecting you from danger. o Explain and draw the pathway of a reflex arc. o Outline how a reflex arc allows for a faster response.  Outline the role different components of the nervous system, including the central and peripheral nervous system, when detecting and responding to stimuli. The Endocrine System Explain how hormones function in the body as chemical messengers and how we use them to respond to stimuli. Outline that there are many organs in the endocrine system that secrete a range of hormones into the blood and identify the pituitary as the master gland. Describe how hormones are released into the blood but will only trigger a response in a target cell with the specific complementary receptors. Negative Feedback Control Describe and explain how negative feedback mechanisms work to maintain homeostasis in the body. Compare and contrast the action of the nervous and the endocrine system.  Explain how the nervous and endocrine systems function independently and together to maintain homeostasis in the body. o Nervous and endocrine control of temperature o Endocrine control of blood glucose