1st Nine Week Exam Review - B

28. The Earth's core is mainly composed of

• hydrogen and aluminum

• silicon and hydrogen

• silicon and oxygen

• iron and nickel

29. This cross-section shows the Earth's composition from the center to the surface. Section 3 is most likely composed of

• molten rock

• granite and basalt

• iron

• nickel

Tags

NGSS.MS-ESS2-1

30. The Earth's mantle is mostly composed of

• hydrogen and aluminum

• silicon and hydrogen

• magnesium and iron

• silicon and oxygen

31. Compared to rocks in the earth's crust, rocks in the mantle are

• less dense

• hotter

• more solid

• more mineral-rich

32. What happens in a convection current in the mantle?

• hot magma rises, cooler magma sinks

• cooler magma rises, hot magma sinks

• hot magma rises and cooler magma rises

• hot magma sinks and cooler magma sinks

Tags

NGSS.MS-ESS2-1

33. Density is highest in Earth's

• crust

• mantle

• outer core

• inner core

34. How is the crust different from the outer core?

• The crust is thinner than the outer core.

• The crust is hotter than the outer core.

• The crust is denser than the outer core.

• The crust is less solid than the outer core.

35. The theory of plate tectonics attempts to explain the

• composition of Earth's inner regions.

• movement of Earth's upper layers.

• gravitational forces on Earth.

• layering of sedimentary rock.

Tags

NGSS.MS-ESS2-3

36. When an oceanic plate collides with a continental plate, which one will sink beneath the other?

• the oceanic plate will sink

• the continental plate will sink

• neither will sink

• both will sink

37. What type of plate boundary is pictured?

• convergent

• transform

• divergent

• subduction

Tags

NGSS.MS-ESS2-3