Unit 1 Benchmark Summative

Sirhan wants to make a 2-D picture model of his classroom drawn from a view that is looking down from the ceiling. Which of the following would he not be able to include in his model?

• desks in the classroom

• coat closet in the classroom

• distance from the floor to the ceiling

• distance from the door to the opposite wall

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A class was discussing whether to make a 2-D or 3-D model of their classroom. They listed a number of advantages and disadvantages of each. They are now debating which model to make. Which of the following is an advantage only for a 3- D model?

• easy to store

• takes less time to make

• requires fewer tools to make the model

• can show the height of objects in the room, such as a desk

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Aba is studying parts of a plant. Which tool would be most useful if Aba wants to see parts of a leaf?

• hand lens

• magnifying box

• microscope

• telescope

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Brian conducted an experiment to test the strength of a packing foam material. He finds that the material gets a dent if he puts more than three bricks on it. What claim does this evidence support?

• The foam is not very strong.

• The brick is too heavy for his test.

• The foam will dent if he puts six bricks on it.

• The foam will not dent if he puts five blocks of wood on it.

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Different groups of students used a ruler to measure the length of a leaf. They recorded their measurements in their science notebooks. Why should the groups show their data to one another?

• They are curious about what the other groups did.

• They want to decide which group recorded the data most neatly.

• They want to record all of the measurements in the same notebook.

• They want to compare their work and make sure they get the correct measurement.

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Logan measures the rainfall in his city each day for a month. Which of the following is an observation he could make about the amount of rainfall he observed?

• The rainfall kept many people from going outdoors.

• The amount of rainfall will decrease during the summer.

• The rainfall was greatest during the third week of the month.

• The amount of rainfall will probably be higher next month.

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Some scientists study life. Others study nonliving matter and energy. Which topic relates to Earth science?

• water as a source of energy

• water for cleaning dirty clothes

• water falling from clouds as rain

• water as a home for living organisms

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Chad wraps three jars with three different materials: foil, cotton, and wool. Then he fills the jars with hot water of the same temperature. Chad claims that wool is better than cotton or foil at keeping a liquid warm. What evidence would support Chad's claim?

• The final water temperature was coolest in the jar wrapped in cotton.

• The final water temperature was coolest in the jar wrapped in wool.

• The final water temperature was warmest in the jar wrapped in wool.

• The final water temperature was the same in the jars wrapped in cotton and foil.

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Scientists study the natural world. Evidence is an important part of their studies. What is evidence?

• an educated guess

• data that support or reject a hypothesis

• communicating results

• statement about what will happen in an experiment

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Some models have three dimensions. The dimensions are length, width, and height. Which model below has three dimensions?

• drawing of a skeleton

• photograph of a skeleton

• plastic model of a skeleton

• computer model of a skeleton shown on a monitor

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