Plate tectonics

9.Match each type of plate boundary with its characteristic motion.

10.Place the following stages in the formation of new oceanic crust at a mid-ocean ridge in the correct order from first to last.

11.Which of the following are pieces of evidence that support the theory of plate tectonics? (Select all that apply)

12.Oceanic crust is denser than continental crust.

13.At a convergent plate boundary where an oceanic plate meets a continental plate, what typically happens to the oceanic plate?

14.The Nazca Plate moves at approximately 160 mm per year. How far will it move in 1 million years?

15.Match each term with its correct description.

16.At a convergent plate boundary where two continental plates collide, which geological feature is most likely to form?

17.A student measures the distance between two points on either side of the Mid-Atlantic Ridge. After 5 years, the distance has increased by 125 mm. What is the average rate of plate movement per year?

18.In a laboratory demonstration, a student uses a heat lamp to heat a tray of water with floating paper 'plates'. The paper plates move apart above the heat source. This model best represents which type of plate boundary?

19.In an experiment simulating seafloor spreading, a student uses a heated beaker of syrup with a layer of floating cork pieces. When the syrup is heated from below, the cork pieces move apart. This model demonstrates that convection currents in the mantle can drive plate motion.

20.A student uses a plastic tray filled with sand to model the formation of mountains. She pushes two blocks of wood together from opposite ends, causing the sand to buckle upward. This model best represents which type of plate boundary?

21.Match each type of plate boundary with the geological feature most commonly associated with it.

22.In an experiment to model subduction, a student places a piece of thick cardboard (continental crust) and a thin, flexible plastic sheet (oceanic crust) on a layer of damp sand (asthenosphere). When he pushes the plastic sheet toward the cardboard, the plastic sheet slides under the cardboard. This model best represents what type of plate boundary?

23.What is the name of the scientific theory that describes the movement of Earth's lithospheric plates?

24.At which type of plate boundary does subduction occur?

25.The asthenosphere is cooler and more rigid than the lithosphere.

26.What is the typical range of plate motion at the Mid-Atlantic Ridge?

27.Continental lithosphere is typically thicker than oceanic lithosphere.

28.Which of the following is NOT evidence for plate tectonics?

29.Transform plate boundaries are associated with volcanic activity.

30.Place the following events in the process of seafloor spreading in the correct order from first to last.

31.Match each geological feature with the type of plate boundary most commonly associated with it.

32.Which of the following are characteristics of the asthenosphere? (Select all that apply)

33.Place the following steps in the formation of a mountain range at a convergent plate boundary in the correct order.

34.At a mid-ocean ridge, newly formed oceanic crust is hot and less dense. As it moves away from the ridge, it cools, becomes denser, and thickens. This process primarily contributes to which of the following?

36.Continental lithosphere is typically about twice as thick as oceanic lithosphere.

37.Which of the following are driving forces for plate motion? (Select all that apply)

38.Match each plate boundary type with its characteristic feature.

39.In an experiment to model seafloor spreading, a student uses a tray of water with floating paper 'plates' and heats the water from below. The paper plates move apart above the heat source. What does the movement of the paper plates represent?

40.Complete the sentence with the correct term.

41.According to the source, what is the typical range of plate motion at the Mid-Atlantic Ridge in millimetres per year? Give the lower end of the range.

42.Name the two types of crust that make up tectonic plates, and state which one is denser.

43.At the Mid-Atlantic Ridge, plate motion ranges from 10 to 40 mm per year. What is the average speed in mm per year?

44.Complete the sentence.

45.Name the three main types of plate boundaries.

46.What process carries the edge of a plate down into the mantle at a convergent boundary?

47.At the Mid-Atlantic Ridge, plate motion ranges from 10 to 40 mm per year. If a plate moves at an average speed of 25 mm per year, how many kilometres will it move in 1 million years?

48.Complete the sentence using the correct terms from the list: lithosphere, asthenosphere, crust, mantle.

49.Complete the sentence with the correct word.

50.Fill in the blanks with the correct terms.

51.What is the name of the process by which new oceanic crust is formed at divergent plate boundaries?

52.Explain why oceanic crust is generally found below sea level while continental crust stands above sea level.

53.Describe how the thickness of oceanic lithosphere changes as it moves away from a mid-ocean ridge, and explain why this change occurs.

54.What is subduction and what role does it play in the movement of tectonic plates?

55.Explain the difference between the lithosphere and the asthenosphere in terms of mechanical properties and heat transfer.

56.Describe two pieces of evidence that support the theory of plate tectonics.

57.According to the source, what is the typical range of plate motion at the Mid-Atlantic Ridge in millimetres per year? Give the lower end of the range.

58.At the Mid-Atlantic Ridge, plate motion ranges from 10 to 40 mm per year. What is the average speed in mm per year?

59.At the Mid-Atlantic Ridge, plate motion ranges from 10 to 40 mm per year. If a plate moves at an average speed of 25 mm per year, how many kilometres will it move in 1 million years?