These materials allow electricity to flow easily through them. Water, metal, paper clips, staples, brads, copper and living things.
What materials conduct electricity?
100
Electricity is produced when a coil of wire passes through the magnetic field of a permanent magnet.
How can a magnet be used to make electricity?
100
A positively-charged particle found in the nucleus of an atom.
What is a proton?
100
Anything that has mass and takes up space. It is made of molecules and atoms.
What is matter and what is it made of?
100
Any time the size, shape, or state of matter changes, but it does not change into a new kind of matter.
How can I tell that a physical change has taken place?
200
These materials will not allow electricity to flow through them. Wood, cloth, plastic, rubber,air, glass, erasers, pencils.
How will I know that a material is an insulator?
200
An electromagnet can be controlled. The strength of the magnet can be increased by increasing the number of coils of wire or by increasing the amount of current passing through the wire. An electromagnet can be turned on and off. The strength of a bar magnet is not easily controlled.
How is a bar magnet different from an electromagnet?
200
A particle with no charge found in the nucleus of an atom.
What is a neutron?
200
solid: the molecules of a solid are packed together in a regular pattern. They vibrate back and forth in place.
liquid: The molecules in a liquid slide past each other, but stay close together. They do not form a regular pattern.
gas: The molecules of a gas are not arranged in any pattern. They move rapidly and do not stay close together.
plasma: Plasmas are a lot like gases, but the atoms are different because they are made up of free electrons and ions of the element.
What are the properties of each state of matter?
200
A mixture can be easily separated into its smaller parts. A solution cannot be easily separated.
How are mixtures different from solutions?
300
A series circuit has only one path for the electric charges to flow on. A parallel circuit has more than one path for the electric charges to flow on.
How are series circuits different from parallel circuits?
300
When an object is rubbed with another object negative charges rub off on it. The object become negatively charged. The other object will be positively charged, since it now has more positive charges. The negatively charged object releases a charge and this kind of electricity forms.
How is static electricity made?
300
A negatively-charged particle that orbits the nucleus of an atom.
What is an electron?
300
This property can be found by using a balance. It can also be found by adding the masses of the parts of an object.
How can the mass of an object be found?
300
This is a change in matter that produces new kinds of matter with different properties. Clues that this kind of change is taking place include changes in color, state, temperature odor and energy. Bubbling, smoke, light, sound and motion are evidence.
What are chemical changes of matter?
400
Electricity can be used to make magnets, and magnets can be used to make electricity.
What is the relationship between magnets and electricity?
400
Static electricity is difficult to control.
How is static electricity different from current electricity?
400
This property of matter is a characteristic that can be observed by the senses without changing matter into something new. Size, shape, color, odor, luster, density and texture are examples of this property.
What is a physical property of matter?
400
To find this property of an irregularly shaped object, place it in a measuring cup or a graduated cylinder partly filled with water and measure the change in the amount of water . To find this property of a rectangular object, measure the length, width, height and multiply.
How can the volume of an object be found?
400
Matter is neither created nor destroyed. The amount of matter always stays the same.
What is conservation of matter?
500
Wrap a wire around a piece of iron. Connect the ends of the wire to a battery and you have a magnet, The iron will become magnetized.
How can electricity be used to make a magnet?
500
Batteries, bulbs, wires, switches.
What are the parts of a circuit?
500
This property of matter is a characteristic that can be observed only when the matter is changed into a new kind of matter.
What is a chemical property of matter?
500
Weight changes when the amount of gravity pulling on an object changes. The mass of an object remains the same.