Download S6E3c. Sample

6th Grade Science Sample Assessment Items S6E3c. Subsurface Topography A student reads an adventure novel. In the novel, a deep-diving research submarine has a problem while in the deepest part of the ocean. Which part of the ocean will the student find listed as the deepest in her science textbook? [DOK 2] A. The ocean basin is the deepest point. B. The oceanic trench is the deepest point. C. The continental rise is the deepest point. D. The continental shelf is the deepest point. Explanation of Correct Answer from Study/Resource Guide: The correct answer is choice (B) The oceanic trench is the deepest point. When one tectonic plate slips below another, it creates a large trench similar to a valley on land. Choice (A) is incorrect. The ocean basin is above a trench. Choice (C) is incorrect. The continental rise moves upward toward the surface. Choice (D) is incorrect. The continental shelf is the shallowest part of the ocean floor.

The floor of the ocean _____. A. is smooth and sandy B. has rivers and lakes C. is hidden and unknown D. has mountains and trenches*

The section of a continent that lies just off the shoreline and extends beneath the ocean is called the continental ______. A. plain B. shelf* C. basin D. ridge

Which best represents the order of seafloor features as you move from the shoreline to the deep ocean? A. continental slope → continental shelf → continental rise → mid-ocean ridge B. continental rise → continental shelf → mid-ocean ridge → continental slope C. continental shelf → continental slope → continental rise → mid-ocean ridge* D. mid-ocean ridge → continental rise → continental shelf → continental slope

6th Grade Science Sample Assessment Items S6E3c. If you could look at the deep ocean floor, which is the best description of what you would see? A. flat, silt-covered, lifeless regions B. high mountains and deep valleys* C. ocean ridges with active volcanoes D. coral reefs with many varieties of life

Ridges, tectonic plate boundaries, and hydrothermal vents are physical features found on our planet. Where are these features found MOST OFTEN? A. in the middle of huge lakes B. around the edges of deserts C. at the bottom of Earth's oceans* D. on top of mountains on continents

What are mid-ocean ridges? A. They are areas where tectonic plates meet. B. They are narrow valleys that run along the bottom of the oceans. C. They are areas underwater where thick layers of sediment have accumulated. D. They are areas of underwater mountain chains located near many active volcanoes.*

Algae and other producers need lots of sunlight. Most ocean algae would be found in the water _____. A. on the abyssal plain B. in the oceanic trench C. above the continental shelf* D. beside the continental slope

6th Grade Science Sample Assessment Items S6E3c.

At which ocean feature would the greatest amount of water pressure be exerted? A. Trench* B. Abyssal plain C. Continental shelf D. Continental slope

Ridges, tectonic plate boundaries, and hydrothermal vents are physical features found on our planet. Where are these features found MOST OFTEN? A. in the middle of huge lakes B. around the edges of deserts C. at the bottom of Earth's oceans D. on top of mountains on continents

Identify the physical features of the ocean floor numbered in the diagram above.