1. Ch. 20 Sec 3 Org
2. Ch. 20 Sec 3 Lect
3. Review Packet
4. Ch. 5 Sec 3 & 20 Sec 3 Quiz Friday
1. What is the difference between red shift and blue shift? How does it tell us if a start is moving closer or farther away from Earth?
2. Where do solar systems come from? How are they sorted?
1. Ch. 19 Quiz
2. Ch. 5 Sec 3 Organizer
3. Ch. 5 Sec 3 and Ch. 20 Sec 3
The deepest mines in the world are about 5 km beneath the surface of Earth in South Africa. The depth, combined with very hot temperatures, makes the mines expensive and dangerous to operate.Why do people go to all this effort? These mines yield a valuable mineral
1. You may have seen pictures of gold bars. Does gold come straight from the ground in this form? If not, how does it get that way?
2. How do people use mineral resources?
3. What factors might determine whether or not a particular mineral is mined?
1. Check 19 sec 2 Org
2. Ch. 19 Lecture
Areas called vents spew heated water and other materials from Earth’s interior into the ocean.Water enters Earth’s interior through cracks in ridges found on the ocean floor. The water is heated and later released through the vents. The materials that come from the
vents include gases and various minerals.
1. Describe what you see in this picture.How is it different from the way you imagined the seafloor to be? How is it similar?
2. What resources come from the oceans?
1. Finish Ch. 18
2. Ch. 18 Mind Jogger
3. Ch. 18 Quiz on Wed 4/30
Grunion are small fish that know how to take advantage of California tides.When tides are the highest, they swim with each wave as far up the beach as possible and lay their eggs, as shown below. About two weeks later, when tides are again peaking, the hatched baby grunion are carried into the ocean as waves wash over the spawning area.
1. When would be a good time to catch grunion?
2. Why do you think grunion lay their eggs in an area that is temporarily out of reach of the tides?
3. Why do sand castles built on the beach get washed away?
1. Ch. 18 Section 2, 3 Org
2. Ch. 18 Lecture
Once in the water, roughly six-sevenths of an iceberg is below the surface. Since there is so much of the iceberg below the waterline, deeper currents move the mass more than winds or waves. One of the currents that moves icebergs in the North Atlantic is the Labrador Current.
1. Why are deeper currents, more than waves or wind, the moving force behind icebergs?
2. What factors might affect whether or not an iceberg moves far enough south to enter the shipping lanes?
1. Ch. 17 MindJogger
2. Ch. 18 Section 1 Org
3. Ch. 18 Lecture
People have been evaporating seawater to obtain salt since ancient times. The oceans, composed of about 3.5 percent salt, provide a nearly endless supply. Below are Mahatma Gandhi and his followers on their famous 1930 salt march across India to the sea. They were nonviolently protesting England’s salt tax and law that made it illegal for Indians to collect their own salt.
1. What are some common uses of salt?
2. Name some components of ocean water other than salt.
3. Besides salt, what other resources come from oceans?
1. Ch. 17 Sec 3 Org
2. Ch. 17 Sec 3 Lect
3. Evidence of global climate change
1. Explain how Earth's tilted axis is responsible for seasons.
2. Explain how people are adding carbon dioxide to the atmosphere.
3. If Earth's climate continues to warm, how might your community be affected?
1. Ch. 17 Sec 3 Org
2. Ch. 17 Lecture
1. Describe the two types of adaptations an organism can have.
2. How are the climate types determined?
3. Who developed the climate classification system?