Log on to this great site. Read through the information and general background on the home page. Then click through the different parts of the spectrum from radio waves to gamma rays and discover how each is made as well as their uses and dangers.
Archive for the ‘2009-10 G9 Int Sci’ Category
You can check out each other’s work by clicking on the links below. You can learn from each other! Feel free to give each other feedback by leaving a comment.
You are going to investigate reflection in a plane (flat) mirror. You will use the apparatus provided to collect data to support your findings. You will be required to present the data in tables, and then to process it appropriately. Make sure you look at the previous lab on refraction, and don’t make the same mistakes!
Here is an outline from Mr. Duckworth that explains in a bit more detail what you need to hand in. REFLECTION LAB
Here are links to a couple of sites on ray diagrams. This first one is factual. This one is interactive, and covers the different types of image obtained when you place your object various distances from the the lens.
Make sure you know the difference between a real and virtual image, an inverted and an upright image, and a magnified and diminished image.
Now that you know all about refraction, and how light bends as it passes through lenses, it’s time to take a look at where we use lenses in our daily (or not so daily) lives. Microscopes, telescopes, cameras, binoculars, all contain at least one lens. Your task is to select one application of lenses and do some research on it. Prepare a glogster poster of your findings. You must explain what type or types of lenses are present, what refraction has to do with your chosen application, and how it works. Follow the links here to help get you started.
Here is the revision checklist as promised, in traffic light form.
LOOK AT IT NOW – DON”T WAIT UNTIL THE WEEKEND BEFORE YOUR EXAMS.
I will be available for tutorials every day next week. Happy revising!
We’re going to learn about refraction and how it happens. Thanks to Mr Duckworth for producing these notes to help us. Grade 9 Integrated Science Waves Topic – refraction
We’ll also be doing a lab to collect some data and find out the refractive index of glass and perspex. The rubric is here: Pre IB Lab Rubric 08 – 09 You will be assessed on the data collection and processing part only.
Now that we know what about the structure and function of the eye, let’s try and answer these questions:-
- How do optical illusions (such as Optical Illusions) work?
- Explain the evolution of the eye.
- Compare the eyes of predators with those of their prey.
- What is stereoscopic vision and how does it help animals survive?
Get into groups of 3 or 4. Each person in your group should choose one question to research and answer. Spend about 30 mins on this. Come back together as a group and share your answers with each other. Once each member of the group has responded, write down at least 2 follow-up questions for each topic, then try and answer those.
Sound waves travel through the air, and we are able to detect them, using our ears. So, let’s start by looking at a diagram of the human ear, and relate the structure to the function. You don’t need to be able to draw the diagram, just label it, and know what each part plays in allowing us to hear. Use this site to learn about ear structure and how we hear.
Now let’s try and answer these questions:-
- Why do we have two ears?
- What is perfect pitch?
- How do cochlear implants work?
- How is an owl’s face like a satellite dish?
- What is ultrasound? How do we use it?
- What is echo-location? Bats and dolphins use it all the time. Can humans learn to as well?
Thanks to Mr Boulton for finding these resources.
As if we arranged the whole thing… following on from this week’s discussion about earthquakes, seismic waves, epicenters, S and P waves…did you feel it?
Could you explain to your parents (assuming they are not seismologists) what happened to cause today’s quake? Could you explain it to someone in Grade 1?
Was there a tsunami warning after this earthquake? Why or why not?