GED GED Science GED Science Exam Online Training
GED GED Science Online Training
The questions for GED Science were last updated at Feb 09,2025.
- Exam Code: GED Science
- Exam Name: GED Science Exam
- Certification Provider: GED
- Latest update: Feb 09,2025
In a suspension, two materials will mix together only temporarily. One material does not dissolve into the other, but stays suspended only until gravity pulls it down.
Which is an example of a suspension?
- A . colored water
- B . muddy water
- C . bleach
- D . ice water
- E . carbon dioxide and water
Some recipes suggest that certain foods, such as sauces and frostings, be prepared in a double boiler, such as the one shown at the left.
Which statement best describes the advantage of using a double boiler?
- A . The food in the top pan absorbs the heat energy from the water and keeps the temperature of both substances just below the freezing point of water.
- B . The food in the top pan will be cooked at a temperature several degrees higher than the boiling point of the water.
- C . As long as boiling water is in the bottom pan, the food will be cooked at the constant temperature of the boiling water.
- D . Less energy is required for the food to reach a boiling temperature than for the water to reach a boiling temperature.
- E . Twice as much food can be cooked using half the amount of energy.
Exhibit:
According to the article, about 5 percent of all children born have genes containing which component?
- A . harmful viruses that produce disease
- B . information that came from one parent only
- C . no genetic information
- D . information for red hair
- E . errors that have produced abnormalities
Making bread involves a chemical reaction. A chemical reaction involves starting materials (the reactants) and the substances produced (the products).
Which material is a product of this chemical reaction?
- A . yeast
- B . sugar
- C . carbon dioxide
- D . water
- E . starch
A spring can be compressed or stretched. The amount of force that is required for a spring to return to its original position depends on its "spring constant." If the spring constant is large, thespring is rigid and difficult to stretch or compress. If the spring constant is small, the spring stretches and compresses easily.
The diagram below depicts the amount of compression that results for spring A and spring B after equal force is applied to both.
Which situation requires a spring with the largest spring constant?
- A . A jack-in-the-box springs out of its box.
- B . A shock absorber spring keeps a truck from bouncing when it hits a pothole.
- C . A child plays with a "Slinky" spring.
- D . A spring holds staples in a stapler.
- E . The spring in a pinball game is used to release the ball.
A solid dissolves more rapidly if the solid’s surface area in contact with the water is increased.
Which would result in sugar dissolving more quickly in water?
- A . forming the sugar into large crystals
- B . grinding up the sugar to a powder
- C . using brown sugar rather than white sugar
- D . forming the sugar into a cube
- E . cooling the mixture of sugar and water
To begin a fission reaction, a neutron is shot at high speed into the nucleus of an atom of Uranium-235. This process releases a large amount of energy contained within the nucleus. The diagram above illustrates this process as well as possible by-products.
Based on the diagram and information, which statement best describes the fission reaction shown?
- A . The nucleus of Uranium-235 absorbs a neutron and gets bigger.
- B . The nucleus of Uranium-235 absorbs energy and gets smaller.
- C . The nucleus of Uranium-235 splits into smaller nuclei and releases energy.
- D . Two nuclei of Uranium-235 combine and release energy.
- E . Three neutrons combine and release energy.
Which of the following represents the approximate combined use (in quads) of natural gas and oil in 1997?
- A . 22
- B . 28
- C . 36
- D . 58
- E . 72
The left side of the brain dominates in verbal skills, reading, writing, and logical thinking. The right side of the brain is adept at space and pattern perception. While the right side does not express speech, the right side dominates in visual imagery and spatial relationships.
The left side of the brain would dominate in which of the following activities?
- A . using depth perception to park a car
- B . recognizing a person’s face
- C . recognizing a song on the radio
- D . having a conversation on the telephone
- E . looking at a picture in a museum
The death rate from heart disease fell more than 8 percent in just one year during the 1980s. Advances in public awareness of heart disease and in treatments for it are thought to be partially responsible for the decline. New heart drugs, a technique called angioplasty for clearing the arteries, and surgical advances have also assisted in reducing heart disease fatalities, as has increased interest in a healthy lifestyle and diet.
Which of the following was a contributing factor for the more than 8-percent decrease in heart disease mortality between 1988 and 1989?
- A . New kinds of heart medicine became available for public use.
- B . Sunscreen products were used more frequently.
- C . More people used the “buddy system” while engaging in strenuous activities.
- D . Exercise fads became less popular.
- E . More people regularly slept 8 hours per night.
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