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Seasons and Eclipses Mastery Regrade

15) What type of tide would this arrangement of earth-moon-sun create?  My answer: Spring tide. Correct answer: The correct answer is spring tide. This is the correct answer because when the moon and sun are aligned, they combine their gravitational pulls. This is also why spring tides have the biggest difference between the high tides and low tides. On the mastery quest, this answer was marked wrong even though it was correct. 17) Why do we experience the changing of seasons on the earth? My answer: Rotation of the Earth Correct answer: The correct answer is the tilt of the Earth's axis because when the Earth revolves around the Sun, the axis affects the position of the northern and southern hemispheres in relation to the sun, which causes a change in the seasons. 37) What is your science teacher's full name?  My answer: Mariana Garcia-Serrato Correct answer: The correct answer is Mariana Garcia Serrato. This is the correct answer because in all other ...
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Wave Communication - 3/25/18

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Summary : There are two types of signals, analog and digital. An analog signal changes in frequency and amplitude all the time in a way that matches the changes in the voice or music being transmitted. A digital signal has just two values, which we represent as 0 and 1. An analog signal varies in frequency and amplitude. A digital signal has two values, 0 and 1 (or ‘on’ and ‘off’). The signal is converted into a code using only the values 0 and 1. The signal becomes a stream of 0 and 1 values. These pulses are added to the electromagnetic wave and transmitted. The signal is received and then decoded to recover the original signal. Both analogue and digital signals can pick up unwanted signals that distort the original signal. Digital signals can be cleaned up in a process known as regeneration because each pulse must be a 0 or a 1, so other values can be removed. Analogue signals can be amplified, but the noise is amplified too. This is why digital signals give a...
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Charity Fair Project Blog

Presentation: Summary : Ever wonder about all the animals that were alive, even ten years ago. Well it may not seem like a lot has changed since then. But trust me, it has. About 10,000 species of animals go extinct every year, and who's fault is it? Ours. Most of these extinctions are our fault, from destroying they're habitat to killing them for some thing they have. An example is the west African black rhino, (Slide 3) humans killed them for their ivory and sold it. However there is a charity that can help with the issue of endangered animals. That charity is the World Wildlife Fund, or the WWF for short. The way they help america's crisis of endangered animals is by making sure that public land owners use their areas as a vital habitat for some species. They also work with ranches and farms throughout the great plains to make sustainable livestock for the animals. Now lets talk about money. WWF gives 85% of the money they receive to helping animals. So if y...
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