GED SCIENCE Exam Questions and Answers

QUESTION: 6

Scientific information is always tentative and subject to further checking for accuracy.
Which choice is the best way to check data obtained from a specific experiment?

Do research on the Internet.
Contact government agencies.
Consult with experts.
Repeat the experiment.
Do another related study.

Answer(s): D

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A cell, the basic unit of living things, contains microscopic structures called organelles. A group of specialized cells of the same type forms a tissue, such as muscle or nerve tissue. An organ such as the liver is composed of different kinds of tissues that contribute to its overall function. A group of related organs form an organ system, such as the digestive system. A living organism may contain a number of organ systems working together to carry on the life functions.
Based on the information, in which category does the human heart belong?

cell
tissue
organ
organ system
organelle

Answer(s): C

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QUESTION: 8

Vertebrates, animals with backbones, are divided into the following five major groups: fish, reptiles, amphibians, birds, and mammals. Some characteristics of these groups are given in the table below.
Which statement is true if an animal lives in water, does not lay eggs, and is warm- blooded?
Exhibit:

a fish
a reptile
a mammal
an amphibian
a bird

Answer(s): C

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QUESTION: 9

Simple machines reduce the amount of force needed to do work such as lifting an object. The simple machine shown below is a lever. A downward force on one end of a lever moves the other end up. A playground seesaw or a crowbar are common examples of levers.
The amount of force needed to raise the box sitting on the lever depends on where the force is applied. The more distance between the weight and the force, the smaller the force that is needed.

In the diagram on the left, where would the LEAST amount of force be needed to move the weighted box?