DMS /
8-3 Unit Test

Directions: Select the best answer for each item and mark it on your answer sheet.

  1. (8-1.1) Two science students discovered that the mass of a sample of acetone in an open beaker decreased within a few minutes. One student hypothesized that the acetone reacted with oxygen to form a gaseous compound that escaped. The other student believed that the acetone evaporated into the air. What should the students do to test these hypotheses?
  1. Ask a classmate’s opinion about the chemical and physical properties of acetone
  2. Combine the hypotheses so they give valid predictions of the acetone’s behavior
  3. Conduct a study describing the experiments leading to acetone’s discovery
  4. Perform an experiment that attempts to identify the gas above the open beaker

Planaria are flatworms that are found in shallow streams, often attached to the bottoms of rocks. A class is studying a population of planaria in a nearby shallow stream. The graph below shows data collected over 11 weeks.

  1. (8-1.3) The population started to decrease after 5

weeks. The students concluded that the stream

did not have enough food to support a large

population of planaria. If this trend continues, how

manyplanaria will be living in the stream by the

12th week?

  1. 300
  2. 400
  3. 500
  4. 600
  1. (8-1.5) A student wanted to test the hypothesis that adding antifreeze to water lowers the freezing point of water. The student found that pure water froze at 0oC, while the water/antifreeze mixture froze at -20oC. In order to confirm the results, the student should repeat the experiment using —
  1. a container of a different size
  2. a different amount of antifreeze
  3. a different amount of water
  4. exactly the same set-up as the first Experiment

Carol poured some water into a 200-milliliter (mL) graduated cylinder. Pictured below is Carol’s graduated cylinder and four numbered graduated cylinders.

  1. (8-1.6) Which graduated cylinder has twice the amount of Carol’s?
  1. graduated cylinder 1
  2. graduated cylinder 2
  3. graduated cylinder 3
  4. graduated cylinder 4

Use the diagram to answer item #5 and 6.

  1. (8-3.1) The order of the layers of the Earth from thickest to thinnest is ______.
  1. Crust, Mantle, Outer Core, Inner Core
  2. Inner Core, Outer Core, Mantle, Crust
  3. Mantle, Outer Core, Inner Core, Crust
  4. Outer Core, Inner Core, Crust, Mantle
  1. (8-3.1) The layers of the Earth that are completely solid include the ______.
  1. Crust and Inner Core
  2. Crust and Outer Core
  3. Inner Core and Mantle
  4. Mantle and Outer Core

Use the diagram to answer item #7.

  1. (8-3.2) Scientists can infer the composition of the cores using seismic

waves. The Outer Core is classified as a liquid because ______.

  1. P-waves bend at the cores
  2. P-waves pass through the cores
  3. S-waves bend at the cores
  4. S-waves stop at the cores

Use the Data Table to answer items #8 and #9.

Wave / Motion / Speed
A / Straight / Fast
B / Up and Down / Medium
C / Rolling / Varies
D / Sways / Slow
  1. (8-3.2) The Primary Waves correspond to the traits listed for ______.
  1. Wave A
  2. Wave B
  3. Wave C
  4. Wave D
  1. (8-3.2) The wave that can travel through all mediums except liquids is ______.
  1. Wave A
  2. Wave B
  3. Wave C
  4. Wave D
  1. (8-3.3) Scientists need multiple seismograph stations for epicenter location for all of the following reasons EXCEPT______.
  1. That more circles give more accurate results.
  2. The epicenter could be anywhere in the first circle.
  3. The epicenter may be anywhere on a circle.
  4. Without multiple stations, circles will not align.

Use the diagram to answer item #11.

11. (8-3.3) The letter marking the point on the surface above

the focus is ______.

  1. A
  2. B
  3. C
  4. D

Use the Diagram to answer #12-14 .

12.(8-3.4) The processes shown above changed Rock 1 into Rock 2. Rock 2 is a ______.

  1. Igneous Rock
  2. Metamorphic Rock
  3. Sedimentary Rock
  4. Any of the Rock Types

13. (8-3.4) Rock 1 most likely was ______.

  1. Igneous Rock
  2. Metamorphic Rock
  3. Sedimentary Rock
  4. Any of the Rock Types

14. (8-3.4) The substance that formed from Rock 1 and becomes Rock 2 is ______.

  1. Crystals
  2. Minerals
  3. Magma
  4. Sediment

15. (8-3.5) Fossil Fuels are considered useful to humans because they are______.

  1. burned for energy.
  2. easy to find.
  3. made of living things.
  4. natural resources.

Use the diagram to answer items #16 and #17.

16. (8-3.6) Subduction Zones occur because ______.

  1. Continental Crust is less dense

than Oceanic Crust

  1. Continental Crust tougher than

the Oceanic Crust

  1. Oceanic Crust is blocked by

Mountains on Continents

  1. Oceanic Crust melts at the

Continent’s coasts

17. (8-3.6) The oldest crust in the diagram would be located at the point labeled ______.

  1. A
  2. B
  3. C
  4. D

Use the Pictures to answer item #18.

18. (8-3.7) The event that most likely caused this change in landform was ______.

  1. A Meteor Impact
  2. A Volcanic Eruption
  3. An Earthquake
  4. Long-Term Erosion

19. (8-3.8) The order of seismic waves leaving from the focus is ______.

  1. P-wave, S-wave, Surface Wave
  2. P-wave, Surface Wave, S-wave
  3. S-wave, Surface Wave, P-wave
  4. Surface Wave, P-wave, S-wave

Use the map to answer items #20 and #21.

20. (8-3.9) The Peak of the Mountain is located

at ______.

  1. A
  2. B
  3. C
  4. D

21. (8-3.9) Theelevation of Black Bear Camp is…

  1. 460 m
  2. 520 m
  3. 640 m
  4. 720 m

Use the map to answer items #22 and #23.

22. (8-3.9) The river in this image is located at ______.

  1. A
  2. B
  3. C
  4. D

23. (8-3.9) The “X” in this image

shows a ______.

  1. City
  2. Field
  3. Forest
  4. Valley

24. (8-3.5) What is the difference between a renewable and non-renewable resource? Give an example of each.