ASVAB General Science: Which Science Topics to Know and Study for Your ASVAB Exam?

As a potential military recruit preparing for your ASVAB or Armed Services Vocational Aptitude Battery, you will be tested on a number of different science topics within the General Science or (GC) section. In this article, I will give you a quick overview of which topics to focus on and what to study within those topics.

The general science section on the ASVAB tests you on the various science topics that you have learned throughout your high school education. This includes biology, chemistry, earth science and even some astronomy.

However, the focus is a lot more heavily on the biology and chemistry section and less on the earth science and astronomy. Your studies should also be divided accordingly.


For the biology section, you will be expected to know various topics within the life sciences. This includes basic topics in biology such as the concept of homeostasis, the structure and function of a cell, and even the different aspects related to the human being including nutrition, and different biological systems for example the circulatory and respiratory system.

Of course you will also be asked to understand the difference between plant and animal cells including their structure and their basic life functions.

Additional biology topics include classification of animals and animal science. This includes humans which are scientifically considered to be animals. You will also be asked to understand topics and concepts related to nutrition such as, “What are the different food groups and what kind of molecules make up these food groups?”


For the chemistry portion, you will be asked questions relating to the periodic table and understanding the structure and function of atoms including how the atoms are classified and related to each other.

You will also be asked to do some mathematical calculations such as converting the different types of temperature measurements, and perhaps balancing a chemical formula or equation as they relate to chemical reactions.

Earth Science

For the earth science section, you will be asked general questions relating to geology, oceanography and even astronomy. Don’t let astronomy scare you. Simply understand what the planets are, what the order is and where they are located in relation to each other.


For the physics section, you will be asked to answer questions related to kinematics and Newtonian mechanics, work energy and perhaps a few simple machines. You may be asked questions relating to fluids, energy, thermodynamics and perhaps even some light and waves.

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Super Science Fair Projects

Even if kids deny it, winning the science fair is a pretty big honor. It is something a student will get to boast about for years to come. Instilling pride in their school work and sparking a genuine and possible lifelong interest in science is something not many subjects can do through a fair or a competition. Just like in any competition, most children will not want to submit something that will be so-so. Even if it does not win, a science project submitted to the fair has to be world class. It has to be one of the super science fair projects!

Depending on the year level of your child, as well as their branch of science of choice (usually, you have three branches throughout a child’s elementary and middle school life), there are many super science fair projects out there. The first step to getting a super science fair project is to carefully study the rules of the fair. Each fair is different depending on the school or school district. Getting to know the rules, as well as the criteria of what the judges are looking for will help you and your child come up with something worthy of the colored prize ribbons.

Earth Science is the science that studies our world and what it is made of. Think geology, anthropology, carbon dating, and the like. The most famous earth science project out there is probably the baking soda and vinegar volcano which shows how magma can rise from the earth and out over the volcano simulating a volcanic eruption. The project also demonstrates a basic chemical reaction. For a super science fair project that involve earth science though, try coming up with your own system for carbon dating. Study the method behind carbon dating and see if you can probably do the same with a few household tools.

One of the more popular choices for super science fair projects in the lower grades is a project that involves life science. Life science is the study of trees, animals, humans, and all other living things. Something as simple as comparing plant growth will count as a science fair project. In order to win, though, take the project up a notch and try growing plants through a hydroponic or aeroponic system. The most important thing is that your child comes up with a good system that they understand and can present healthy growing plants without the use of soil!

Finally, there is physical science, which is by far the most commonly used concept when it comes to super science fair projects. If you pick physical science as your branch, be ready for the competition! If you have a lesson outline of your child’s physical science lessons, choose a lesson ahead of what they are currently studying, and base the project on that lesson. This will assure you that your child’s project is unique and will throw everyone off by surprise. Being ahead of everyone else in terms of concepts or theory is always a sure winner!

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Scientific Fields – Natural Sciences Vs Social Sciences

Science is a thought process combined with data. But, what is a natural science and what is a social science?

What is science?

Science, all science, the process of gaining knowledge through experimentation. Science is a methodology used to understand our world.

Natural sciences and social sciences are different only in what they study.

Natural sciences

Natural sciences are sometimes called the hard sciences. These are subjects such as chemistry, physics, astronomy, biology, earth science, atmospheric science, materials science, and oceanography.

These fields all study the world and how it works.

Chemistry is the study of matter. When you study chemistry, you learn about what makes up matter, atoms. You learn about atomic structure and how molecules form and bond. You learn how matter reacts and changes state.

Earth science is the study of planet Earth. This field studies soil, geology, minerals, rocks, precious stones, plate tectonics and volcanoes, among other topics.

Physics is the study of what composes the universe and how the forces interact with matter and each other.

Astronomy is the study of the formation and development of the universe, planets, comets, stars, galaxies, celestial mechanics, red shift, blue shift, and everything else that happens in space.

Biology is the study of living things. How to bodies work? What’s different between a plant and a monkey?

Social science

Social sciences still use the same methodologies as natural sciences. Data is found and analyzed. The biggest difference for social sciences is, however, that social sciences deal with people.

Anthropology deals with how people interact with other people and how our cultures work.

Archaeology studies remnants of buried civilizations.

Economics is the study of money, the production of goods, and the distribution of those goods.

Human geography studies how humans are distributed on the earth and how we change and manage the earth.

Education can be a science too. People study which methods are best for learning.

History is the study of the past. Since history requires the written records and anything before then is prehistory, history is also the study of people-people of the past.

Linguistics is the study of human language. How did language develop? When do kids learn to speak? How do we learn multiple languages? How are the sounds and syntax different between languages? How does language evolve over time?

Political science deals with politics. Politics concerns itself about how stuff is distributed among people. Who gets what?

Psychology is the study of our brains. How do we think? What can go wrong with the brain? How can we fix our thoughts and behaviors?

Sociology is the study of our societies and how people relate and interact with each other. How do humans behave in society?

So, again, the natural sciences deal with the study of the universe and the earth. Social sciences deal with people.

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