Exam 2: Science, Matter, Energy and Systems

A form of kinetic energy that travels in the form of a wave as a result of changes in electrical and magnetic fields is ____.

Which list describes the sequence scientists typically follow in the beginning stages of their investigations about how nature works?

When matter undergoes physical changes, the chemical composition also changes.

Flowing water is an example of ____________________ energy.

A scientific law ____.

Carbon is an element, meaning that it cannot be broken down further by chemical means.

Genes are composed of sequences of ____.

The second law of thermodynamics says that whenever energy is converted from one form to another in a physical or chemical change, ____.

Two or more different elements can combine to form isotopes.

Which form of electromagnetic radiation has the shortest wavelength?

A(n) ____________________ is a type of matter that has a unique set of properties and that cannot be broken down into simpler substances by chemical means.

Because scientific theories are tentative explanations, they should not be taken seriously.

____ is a measure of the amount of energy available to do useful work.

Well-designed scientific experiments compare something between two groups, an experimental group and a ____________________group. These groups are as similar as possible except for the variable of interest.

Give an example of a way you can convert potential energy into kinetic energy.

The first law of thermodynamics is also known as____.

The atomic number of an element is the number of ____.

Science that is based on thorough testing with appropriate statistics and that has withstood peer review is considered ____.

One essential nutrient for plant growth studied by Bormann and Likens is ____________________.

What are the physical states and chemical forms of matter?