Respiration is more than just breathing. In fact, while breathing is necessary to supply oxygen, the respiration process has three sets of chemical reactions: glycolysis; the Krebs cycle, or the citric acid cycle; and the electron transport system. Each of the three parts of respiration is carried out in every cell of your body. Respiration […]
Electromagnet
The diagram shows a closed switch connected in the electric circuit for an electromagnet. The closed switch allows the electric current from the battery to flow through the solenoid (coil of wire around the nail) and back to the opposite end of the battery. When an electric current passes through a wire, a magnetic field […]
Science Fair Topic Ideas
Astronomy Project Ideas : Questions stating an independent and a dependent variable about astronomy topics. Project Topics: How to Use Astronomy Facts to Develop a Science Fair Project More Astronomy Science Project Ideas Insolation : This link provides information about insolation only, but you could easily design an investigation in which you would mathematically compare […]
Lead Poisoning
Sugars are organic compounds. But there are some inorganic compounds that are sweet, including beryllium chloride and lead acetate. The latter may have contributed to lead poisoning among the ancient Roman aristocracy: the Roman delicacy defrutun was prepared by boiling soured wine (containing acetic acid) in lead pots. Neither bronze nor copper kettles were used […]
Scientific Method for Daily Problem Solving
The scientific method is nothing more than a process for discovering answers. While the name refers to “science,” this method of problem solving can be used for any type of problem. Teaching Tip: Ask kids to provide an example of identifying a problem in their life and how they solved it. For this assignment, I […]
Science Project: Slime/Question
Step 4: Project Question A science fair project question identifies two variables: the independent variable the dependent variable. Example Questions: The independent variables are in purple type. The dependent variables are in bold type 1. If two solution, glue and borax, are mixed, what effect would the type of glue used have on the viscosity […]
Project: Slime/Variable
Variables in A Slime Experiment Variable is the name given for any part of an experiment that changes. For example, the following question identifies what is happening as well several variables which are identified. Question: If a glue solution and a borax solution are mixed, what effect would the ratio of the solutions have on […]
Passive Transport
Passive Transport: passive: no energy is requiredtransport: to move through a cell membrane. Passive transport is the movement of molecules through a cell membrane without expending any energy. Types of Passive Transport In and Out of Cells. 1. Simple Diffusion is a passive transport in which particles pass through the plasma membrane surrounding a cell. […]
Daylight Saving
Purpose To compare standard time (sun-time) and DST. Materials hammer 3-inch (7.5- cm) 16d nail or other long nail 2-by-4-by-6-inch (5-by-10-by-15-cm) wooden block. watch 2 markers -1 black, 1red adult helper Procedure 1. Ask your adult helper to hammer the tip of the nail near one end of the wooden block. The nail should be […]
Covalent Bonds
A bond is an attraction between atoms. A covalent bond results from the sharing of valence electrons between two atoms. Each covalent bond is made up of one pair of electrons. Both electrons in the bonding pair can be from one atom, or the pair can contain one electron from each atom. When atoms covalently […]
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