Show:
Vocabulary
Heat
Sound
Light
Magnetism and Electricity
100
What is it called when 2 magnets can pull each other?
attract
100
Energy travels from the Sun to Earth by _______________.
radiation
100
Sonar measures underwater distances by using ________________.
echoes
100
Water and clear plastic wrap are __________________.
transparent
100
Where is the force of a magnet its strongest?
at each pole
200
What is it called when 2 magnets push each other away?
repel
200
A(n) __________________ does not transfer heat.
insulator
200
How are sound and light the same?
They both travel in waves.
200
What can separate white light into bands of colored light?
prism
200
In a _____________________ electricity can flow through more than one path.
parallel circuit
300
What is the area of magnetic force around a magnet?
magnetic field
300
What occurs when energy is transferred between 2 objects that are touching?
conduction
300
When sound is reflected off of a surface, it is called a(n)_____________________.
echo
300
Light ____________________, or bends, when it travels through materials like glass.
refracts
300
Why can a balloon stick to a wall?
static electricity
400
________________ transfers heat easily.
conductors
400
Why will a glass dish crack if it is moved from a very hot oven directly into a freezer?
Heat causes matter to expand, while cold causes matter to contract....a very hot object that is cooled to quickly contracts fast and cracks.
400
What does sound travel most quickly through?
solids
400
What does a concave lens cause light to do?
bend outward from the center so the light rays spread apart
400
Why are electrical wires covered in rubber or plastic?
Rubber and plastic do not conduct electricity, so people do not get shocked when it is wrapped around wires.
500
What is the flow of thermal energy from one object to another?
heat
500
_________________ transfers heat through liquids and gases.
convection
500
What is the amount of energy in a sound wave?
amplitude
500
What is the range of waves that make up light?
electromagnetic spectrum
500
What is the flow of electrical charges through a circuit?
current electricity