Have a wonderful summer!
Apollo 13 was the seventh manned mission in the American Apollo space program and the third intended to land on the Moon. The craft was successfully launched toward the Moon, but the landing had to be aborted after an oxygen tank exploded, severely damaging the spacecraft’s electrical system. The flight was commanded by JimLovell with “Jack” Swigert as Command Module pilot and Fred W. Haise as Lunar Module pilot.
The mission was launched on April 11, 1970 at 13:13 CST. Two days later an oxygen tank ruptured which crippled the service module upon which the Command Module depended. To save its batteries and the oxygen needed for the last hours of flight, the crew instead used the Lunar Module’s resources as a “lifeboat” during the return trip to Earth. Despite great hardship caused by limited power, loss of cabin heat, shortage of potable water and the critical need to jury-rig the carbon dioxide removal system, the crew returned safely to Earth on April 17.
I know you will enjoy the film, and it’s a great way to close our study of Space Science, and send us off on our own journeys into high school!
We have begun our study of the planets in our Solar System. Earth is one of the eight planets in our solar system as defined by the International Astronomical Union. In your studies you will learn the current definition of the word planet, and why Pluto is no longer considered a planet, but now rather, a dwarf planet. Below is a basic outline of what we are studying. For this unit we will be focusing on the TrackStar web-based activities and the Planet Creation Project. Links to these sites are under PROJECT RESOURCES on the right aside of this web page.
Planets have different sizes and distances.
Distances – How far from the sun, and its effects on temperatures
Orbits – periods of revolution
The terrestrial planets have rocky crusts.
1. Processes and Surface Features
Craters cover the surface of Mercury.
Volcanoes shape the surface of Venus.
Erosion changes the appearance of Mars.
1. Surface of Mars
2. Gases and Water on Mars
The gas giants have very deep atmospheres.
Jupiter is a world of storms and clouds.
Saturn has large rings.
Uranus and Neptune are extremely cold.
This week’s assignment is to explore the following flash application available at this link here. Our goal is to analyze the graph and how the hours of daylight change over the course of year at various latitudes on Earth.
2) Work with the animation, think about what you are doing, and then answer the questions.
Adjust the latitude to at least two other latitudes.
Make sure one is in the southern hemisphere.
Be sure you use the following vocabulary words in your conclusions:
Do two activities:
When you complete the activities and get 4 of 4 questions correct,
print the pages that shows you did it and put your name on it!
Try to make the orange comet stay on the screen for as long as you can!
We are beginning our study of Space Science, also called Astronomy. We will begin by exploring the various objects that man finds in the night sky, and try to grasp the size and distance of these objects. The class will discuss and watch a video on the early space explorations of man. The week will focus on the topic:
Look at the objects below in the pictures. We looked at the photos and worked together to try to put them in order to answer:
Video from Class: The Unfolding Universe
Follow along with the worksheet in your CH 1 Notes packet.
Click Drops of Atmosphere to see the review of
Layers of the Atmosphere
We are studying the factors that may affect Climate.
Click on the image above for the Climate Comparison Project guidelines and research pages. The link to the Notes pages is to the right of this web page under Classroom Notes.
The temperatures of a location can be affected by any of four factors, as shown below when we used the Smartboard Maps.
Note the effects of the Prevailing Winds on the levels of precipitation. Global winds that blow across ocean areas bring moisture, such as the Trade Winds blowing into the Caribbean Islands and Southeast Asia. When the Trade Winds blow from south Asia onto northern Africa, they blow across land, bringing very dry winds and little rain into the Sahara Desert area.
The Westerlies blow across the North Atlantic Ocean bringing lots of moisture and rain to Ireland, England and Scotland!
Below is a diagram showing the effects of Mountains on the precipitation pattern of a location.
The side of the mountain facing the wind, the windward side, gets much more rain than the dry leeward side.
The Sun heats and cools the land faster than water. We call this UNEQUAL HEATING.
This UNEQUAL HEATING causes differences in pressure.
Differences in pressure cause winds to blow because AIR moves from HIGH PRESSURE to LOW PRESSURE.
Fun Facts about Wind: Click Here
We have been studying the effects of unequal heating of the Earth’s surface, and the resulting wind patterns these cause. Land that is heated more directly absorbs more of the sun’s heat through radiation. The ground touches the air, and through conduction, heats the air – the air becomes less dense which causes it to rise. This creates an area of lower pressure in the atmosphere. As the air rises, it cools, becomes more dense, and then falls back to the earth, creating an area of higher pressure. The movement of the air creates a convection current.
AIR ALWAYS MOVES FROM AREAS OF HIGH PRESSURE TO AREAS OF LOW PRESSURE.
Moving air is called WIND.
The spinning of the Earth causes the winds to bend to the right as they move across the globe. We call this effect the Coriolis Effect. Global Winds are winds that move across large areas around the globe. There are three major Global Wind Belts – the Trade Winds, the Westerlies and the Easterlies. These wind belts are found in both the Northern and the Southern Hemispheres. There are also areas of calm winds, called the doldrums near the equator, and the Horse Latitudes nearthe 30 degrees latitudes. See the diagrams below.
The same convection currents that cause the Global Winds also affect the atmosphere at the local level, especially at the seacoast. Here on Cape Cod we experience these local winds during the summer. Cape Cod is kept cool, sort of a natural air-conditioning, by the local sea and land breezes. The hot summer sun heats the land on Cape, causing the air to rise (low pressure). Cooler descending air from the water (higher pressure) rushes in to take the place of the rising warm air on land, forming a cooling Sea Breeze. This keeps the Cape comfortable on most summer days. At night, the land cools down much faster, the warmer ocean water heats the air, causing the air over the water to rise. Cooler air from the land moves in to take the place of the rising are, creating a Land Breeze.
Study the diagram below, and then CLICK on it to see the animation!.
Both Global Winds and Local Winds are caused by the unequal heating of the Earth’s surface, creating differences in air temperatures and air pressures.