This FREE GED Science Practice Test will Help you Pass Faster and Score Higher!
Imagine being done with GED Science. Wouldn't that be a great feeling? Well, my goal with this FREE GED science practice test is to get you one step closer to making this a reality! Practice tests are one of the best ways to prepare for GED science. On this page, you'll find the questions and answers below. But also, the explanations for each question in the videos!
In addition to the free GED science practice test, you'll also find a list of topics to know to help guide your studying for a higher score.
This video will walk you through and explain the answers for questions 1-10 on the GED Science Practice test
The video above will walk you through the first 10 questions and answers of this GED science practice test. Click here if you'd prefer to watch this GED science practice test video on YouTube.
The questions for this GED science practice test
Question 1
Which of the following statements is supported by the data in the chart?
A. Radon has a higher melting point than titanium.
B. Titanium and magnesium are both liquids at room temperature.
C. Titanium, magnesium, sulfur, and radon are all solids at room temperature.
D. Radon is a gas at room temperature
Question 2
Carbonic acid molecules are composed of two hydrogen atoms, one carbon atom, and three oxygen atoms. Water is also composed of hydrogen and oxygen, but water has two fewer oxygen atoms than carbonic acid does. Carbon dioxide molecules are composed of one carbon atom and two oxygen atoms.
Which of the following statements best describes the chemical reaction represented by the equation below?
H2CO3 → H2O + CO2
A. Water is reacting with carbon dioxide to make carbonic acid.
B. Carbonic acid is decomposing into water and carbon dioxide.
C. Carbonic acid is decomposing into pure water
D. Carbon atoms were created during the reaction, resulting in more carbon atoms in the products.
Question 3
The standard heat of combustion is the energy released when a substance undergoes combustion, with excess oxygen at standard conditions. A scientist wanted to determine the performance of various fuels in a power generation turbine. She determined the standard heat of combustion for 5 chemicals. However, she lost the data for chemical 4.
The mean value of the heat of combustion is 2088.2. What was the heat of combustion for chemical 4? You may use a calculator. Write your answer in the box below:
Questions 4 through 6 refer to the following paragraph and diagram:
The following Punnett square shows all the possible combinations of alleles for color in offspring pea plants when two-color hybrid pea plants are crossed. A capital P represents the dominant color (purple) allele, while a lowercase p represents the recessive color (white) allele. A combination of two dominant alleles results in a purple phenotype. A combination of a dominant allele and a recessive allele also results in a purple phenotype. However, a combination of two recessive alleles results in a white phenotype.
One parent’s alleles are seen on the left-hand side of the square, and the other parent’s alleles are seen on the top of the square. The genotypes of the offspring are shown in the boxes.
Question 4
If you wanted to only grow purple pea plants in your yard this year, which of the following genotypes would you not want?
A. Pp
B. pP
C. pp
D. PP
Question 5
What is the probability that the offspring will be white? You may use a calculator.
A. .25
B. .50
C. .75
D. 1.00
Question 6
What is the probability that the offspring will be purple? You may use a calculator.
A. .25
B. .50
C. .75
D. 1.00
Question 7
Below is the chemical equation for photosynthesis in plants.
Which of the following is correct based on the information given in the equation?
A. Water and carbon dioxide are produced as a result of photosynthesis.
B. Sugar and oxygen are the reactants in photosynthesis.
C. Carbon dioxide and water are the reactants in photosynthesis.
D. Light energy is not involved in photosynthesis.
Question 8
The data in the table below represents the highest daily temperature in Hawaii measured over a 4 day period.
What was the temperature on day 3, measured in degrees Celsius? You may use a calculator.
Write your answer in the box below:
Question 9
Schematic of photosynthesis in plants
Which of the following is false based on the information provided in the diagram?
A. Sugar is synthesized from carbon dioxide and water
B. During the Calvin cycle, carbon dioxide is captured and converted into sugar.
C. Light energy is converted into chemical energy that gets stored in sugars.
D. Water is released as a waste product.
Question 10
In the 4th century, scientists believed that the Earth was the center of the Universe and that the Sun rotates around the Earth. This model is known as the geocentric model. The model was supported by the observation that the Sun appears to revolve around the Earth once a day when a person watches the sky from anywhere on Earth. Additionally, the Earth feels stationary from the perspective of observers on the Earth.
Nicolaus Copernicus developed the heliocentric model in the 16th century. Copernicus proposed that the Sun is the center of the Universe and that the Earth orbits the Sun. Shortly after, Galileo Galilei used the telescope to gather evidence confirming that Copernicus was correct. Today, scientists reject the geocentric model and hold that the heliocentric model is correct.
Which statement most accurately summarizes the above passage?
A. In the 4th century, scientists believed that the geocentric model was correct. Scientists today still believe that the geocentric model is correct, and reject the heliocentric model.
B. In the 4th century, scientists believed that the geocentric model was correct. Today, scientists now believe that both the geocentric and heliocentric models are correct.
C. In the 16th century, scientists believed that the geocentric model was correct, but they believed that the heliocentric model was correct in the 4th century. Today, scientists believe that both models are incorrect.
D. In the 4th century, scientists believed that the geocentric model was correct. Today, scientists now know that the geocentric model is false, and accept the heliocentric model.
This video will walk you through and explain the answers for questions 11-22 on the GED Science Practice Test
The video above will walk you through and explain the questions and answers for #11 through 23 for this GED science practice test. To watch the second video practice test on YouTube, please click here.
Question 11
Newton’s second law of motion states that the acceleration (a) of an object depends on both the mass (m) of the object and the force (F) acting on it. The
equation a = F/m can be used in problem solving. Which statement describes a conclusion that can be reached from this equation?
A. A doubling of the mass decreases the force 2 times when the object’s acceleration is constant.
B. A doubling of the force increases the mass 4 times when the object’s acceleration is constant.
C. A doubling of the force increases the acceleration 2 times when the object’s mass is constant.
D. A doubling of the acceleration increases the mass 2 times with the force acting upon the object is constant.
Question 12
Suppose that Mr. Blake is the manager of an imaginary internet service provider. Mr. Blake's employees are not responding to customer emails fast enough. Mr. Blake suspects that if employees consume caffeine during the day, they will respond faster to customer emails because several of his top-performing employees drink coffee. He decides to do a scientific investigation on the matter.
- Mr. Blake divides employees into two groups based on whether or not they self-report to be daily caffeine users such that each group has an approximately equal number of employees. Mr. Blake measures the number of emails employees respond to in both groups over a three week period.
- The group of employees who consumed caffeine responded to three times as many emails on average than employees in the group who did not consume caffeine.
- Based on the data collected, Mr. Blake thinks it’s likely that caffeine increased his worker productivity, and decides to make free coffee and other drinks available to his employees.
- Mr. Blake guesses that his workers would be more productive in regards to answer emails after consuming caffeine, because some of his top-performing workers drink coffee every day
Match each step to the correct part of the scientific method.
Question 13
Which of the following is not a way that Mr. Blake could improve the experiment to get a better result?
A. Increasing the sample size.
B. Only including employees with a similar experience level.
C. Reducing the sample size.
D. Testing blood caffeine levels to verify caffeine consumption.
Question 14
Balance the following chemical equation. Write your answer in the box below
Question 15
During mitosis, a parent cell is divided into two diploid cells.
Which of the following is false about mitosis?
A. Two diploid cells are produced, each with chromosomes that are genetically different from the parent chromosomes.
B. Two diploid cells are produced, each with chromosomes that are genetically identical to the parent chromosomes.
C. Two diploid cells are produced, each with the same number of chromosomes as the parent cell.
D. None of the above are false
For questions 16 - 18, please use the following chart.
https://en.wikipedia.org/wiki/Atlantic_hurricane#/media/File:North_Atlantic_Tropical_Cyclone_Climatology_by_Day_of_Year_Graph.PNG
Probability of a tropical cyclone of tropical storm or hurricane strength at a specific date, expressed as systems per 100 years.
Question 16
What is the best prediction for when a hurricane and tropical storm will occur next year?
A. September
B. October
C. January
D. February
Question 17
Jane wants to book a vacation in an area that’s been heavily damaged by hurricanes and tropical storms in previous years. What is the safest month for Jane to book her vacation?
A. September
B. August
C. December
D. July
Question 18
What is the best estimate for the number of storms per 100 years that occured between Oct 25 and Nov 05?
A. 55
B.. 15
C. 30
D. 95
A researcher wants to test if a new prescription drug will reduce the urge to smoke for regular smokers, defined as smokers who have smoked at least 100 cigarettes in their lifetime and currently smoke at least one cigarette per day.
The researcher guesses that regular smokers who take the drug will experience fewer urges to smoke than those who do not.
The sample size is 116 regular smokers. The researcher divides the sample subjects into two groups. One group is given the prescription drug, while the other group is given a placebo. This is a double-blind study, which means that neither the subjects nor the researcher know which group is receiving the drug and which is receiving the placebo.
Over a 6 month period, the subjects are asked to self-report how many urges to smoke they experience on a daily basis. After 6 months, there was no significant difference between the average number of urges to smoke between the two groups.
Question 19
What is the population in the study?
A. The group who received the placebo.
B. The group who received the drug.
C. Regular smokers.D. Non-smokers.
Question 20
What is the researcher’s hypothesis? Write your answer in the box below.
Question 21
Does the evidence support the researcher’s hypothesis? Write your answer in the box below.
Question 22
What is the most likely reason for conducting a double-blind experiment?
A. It is easier for the researcher to study the results
B. To eliminate bias
Question 23
Identify the dependent and independent variable in the study.
A. Dependent = number of urges to smoke; Independent = taking the drug
B. Dependent = taking the drug; Independent = number of urges to smoke
C. Dependent = sample size; Independent = population size
D. Dependent = population size; Independent = sample size
GED science practice test answers
- D
- B
- 1086
- C
- A
- C
- C
- 30.5556 degrees C
- D
- D
- C
- A,4, B , 1, C, 2, D, 3
- C
- Ba3N2 + 6 H2O → 3 Ba(OH)2 + 2 NH3
- A
- A
- C
- B
- C
- The researcher guesses that regular smokers who take the drug will experience fewer urges to smoke than those who do not
- No
- A
Thank you for trying this GED science practice test! If you're wondering what else you need to know in addition to what was covered on the GED science practice test, please keep reading below!
What else is on GED science? Here's a list of topics to know for a high score.
Click here to watch the video version of this GED science topics list on YouTube.
Maybe you're reading this right now because you just finished taking the GED science practice test, checked your answers, and were wondering what else you should know.
Or perhaps you were skimming through the GED science practice test and decided this is something you should know about.
Either way, the following is a list of topics that COULD show up on GED science. Please note that the tests are randomized, so there's no way to predict exactly which topics will show up. All of these topics are fair game. On the other hand, you might get some topics that aren't on this list. But the majority of topics you might get on GED science are included. Please note that this list is NOT endorsed or approved by the official GED Testing Service.
Fortunately, if you completed the GED science practice test, read the answers, and went through the videos, then you've already studied many of the topics test-takers have told me show up commonly on the real exam. Again--there's no way to know for sure which questions you'll get on the real test, but I've talked to many test-takers, and tried to put as many of the topics they commonly shared were on the real test version they got in the video.
1. The Scientific Method - Observation, hypothesis, test, conclusion
2. Experiments - Independent variables vs dependent variables, sample, population, control group
3. Making predictions from passages/graphics and spotting trends
4. Measures of central tendency - Mean, median, mode, and range
5. Cell structure and function
6. Photosynthesis
7. Cell respiration
8. The human body - Tissues, organs, organ systems, Immune system, bacteria, viruses, nutrition, etc.
9. Genetics- Asexual vs sexual reproduction, chromosomes, DNA, genes, and alleles, dominant vs recessive alleles
10. Punnett Squares
11. Evolution and natural selection
12. Ecosystems- Food webs, nitrogen cycle
13. Earth’s layers- Crust, mantle, core, plate tectonics
14. Conservation
15. Renewable vs nonrenewable resources
16. Weather and climate
17. Planets and solar system
18. Physical science- Atoms, elements, compounds, mixtures, chemical bonding (ionic vs covalent)
19. States of matter- Solids, liquids, gasses
20. Energy-Chemical, mechanical, nuclear, Law of Conservation of Energy, Potential vs kinetic
21. Motion and forces- Newton's Laws
22. Magnetism and electricity
23. Chemical Reactions- Reactants, products, yield signs, etc.
I really hope this free GED science practice test helped you with your studying!
