McGraw-Hill Education Science Workbook for the GED Test by McGraw Hill Editors

McGraw-Hill Education Science Workbook for the GED Test by McGraw Hill Editors

Author:McGraw Hill Editors
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2021-03-15T00:00:00+00:00


The following question contains a blank marked . Beneath it is a set of choices. Indicate the choice that is correct and belongs in the blank. (Note: On the real GED® test, the choices will appear as a “drop-down” menu. When you click on a choice, it will appear in the blank.)

91. A is an example of a wedge.

92. Which is an example of someone using a simple machine to do work?

A. A boy runs across a football field.

B. A banker counts money.

C. A mother pushes a stroller up a ramp into a building.

D. A girl eats a sandwich.

The following question contains a blank marked . Beneath it is a set of choices. Indicate the choice that is correct and belongs in the blank. (Note: On the real GED® test, the choices will appear as a “drop-down” menu. When you click on a choice, it will appear in the blank.)

93. Vivian is using a screwdriver to insert a screw. The screwdriver functions as a .

94. Which phrase best describes the principle involved in using an inclined plane?

A. greater force, shorter distance

B. greater force, longer distance

C. less force, shorter distance

D. less force, longer distance

Questions 95 and 96 refer to the following information.

A simple machine uses a single applied force to do work on a load. Ignoring friction losses, the work done by the applied force is equal to the work done on the load. However, the machine can amplify the load force (or output force) by trading off force against the distance traveled by the load. The ratio of the output force to the applied force is called the mechanical advantage. The mechanical advantage calculation for different simple machines is shown in the following table.



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