Presentation on theme: "Howard Middle School 6th Grade Earth Science"— Presentation transcript:
1Howard Middle School 6th Grade Earth Science Unit D Test ReviewHoward Middle School6th GradeEarth Science
2Test ReviewScientific evidence suggests that the earth is billions of years old.Continental drift is the idea that the continents were once joined together to form a large land mass.Plate tectonics helps explain the formation of mountains.
3Test ReviewThe Himalayan mountains, which are along the northern border of India, were formed by the collision of two lithospheric plates.The distance from the earth’s surface to the center of the earth is 6,000 km.New lithosphere is mostly created at a divergent plate boundary.
4Test ReviewThe word “lithosphere” is used to refer to the crust and the upper mantle.Earthquakes are most likely to occur at a transform boundary.Plate tectonics refers to the theory that the surface of the earth is made up of large plates that have moved over time.
5Test Review Which of the following statements is TRUE? The earth’s crust moves around but is never destroyed.New crust is always forming on the top of large mountains.Old crust falls into the oceans and is destroyed over time.Old crust is destroyed and new crust is formed over time.
6Test ReviewWhich of the following statements provides evidence for plate tectonics?The same kind of unusual fossils are found in South America and Africa.The same kind of unusual rock layers are found in North America, Europe, and Africa.The earth’s continents are moving at a rate of centimeters per year.
7Test ReviewPlate tectonics is the theory that sections of the earth’s crust have moved toward and away from each other to form continents, mountains, and oceans.
8Short AnswerModern humans have been on the earth for 195,000 years. Select three major events that occurred before that time and describe the order in which they occurred.In your own words, explain:The theory of plate tectonicsHow earthquakes, volcanoes, and mountain formation are related to plate tectonics.Be as specific as you can.
9Short Answer What is subduction? At what type of plate boundary does subduction occur?Do you think nuclear waste should be stored in a subduction zone? Support your answer with at least two pieces of evidence.