Chapter 7
The tiniest recognizable part of an element
What is an atom?
A continuous, unbroken path for electricity
What is a circuit?
A bar that turns on a point
What is the sun?
The only planet on which man can survive in his natural state
What is Earth?
The number of protons an element has
What is atomic number?
Any material that has the ability to attract iron
What is a magnet?
Energy that an object has because of its motion
What is kinetic energy?
The brightness of a star
What is magnitude?
Any object that orbits another object in space
What is a satellite?
Atoms that have gained or lost electrons
What are ions?
The type of electricity that is produced when charges build up on the surface of an object
What is static electricity?
The force that keeps objects from moving against other objects
What is friction?
The scientific study of the stars
What is astronomy?
The surface of the sun
What is the photosphere?
This person developed the periodic table of elements
The unit that measures how much current flows through a circuit in one second
What is the ampere?
The resistance to a change in motion
Telescopes that bend light to make objects seem larger
What is a refracting telescope?
The planet with the most violent weather
What is Neptune?
This type of bond forms when atoms share electrons
What is a covalent bond?
The code used by electronic devices to communicate information
What is the binary number system?
This person developed the three laws of motion we use today
Who is Isaac Newton?
The apparent movement or change in position of one star in relationship to other stars
What is parallax?
These are caused as different areas of the moon's surface are lighted by the sun
What are the moon's phases?