Science test 1

What’s heat energy

The energy in. Moving atoms and molecules (group of atoms).

Thermometer is a…

Speedometer for particles (how fast particle are moving)

What’s light energy

The energy in electromagnetic waves of radiation.

T or F: light energy is the only form of energy that doesn’t need atoms or matter to carry it

True

What’s chemical energy

The energy stored in chemicals

What’s electrical energy

The energy in moving electrons (moving charged particles)

Static electricity

Electrons aren’t moving. Extra electrons act like a magnet

When is an electrical current created

when electrons are moving

What’s sound energy

Vibrations transmitted through gas, solid or liquid that our ears can detect.

what’s nuclear energy

Stored in the nucleus of an atom. Nuclear fusion and fission

Nuclear fusion

Coming together-ex: man made elements, sun-2 hydrogen=helium

Nuclear fission

Break apart (ex nuclear bomb)

What’s mechanical energy

The energy in motion and position of objects. Includes kinetic+potential energy

Kinetic energy

Associated with moving objects

Potential energy

Energy stored in an object because of the objects position. It’s calked PE because it has the potential to be converted into KE or other forms of energy

Properties of energy

Energy causes change (transformation)

Law of conservation of energy

Energy can be converted from one form to another. No matter what happens to it, the total amount remains the same.

Pendulum lab

String length has affect-shorter string has more swing,

Mass has no affect

Amplitude has no affect

Percent error

When you mathematically calculated what the value should be, but your data isn’t what you mathematically calculated

T or F: you can have a conversion without thermal energy

False

Gravitational potential energy

Based on position. To calculate need to know:

Height of object, gravity (gravitational pull), mass

Weight

Number of atoms x gravitational pull

Mass

Number of atoms

Equation for gravitational potential energy

GPE=mgh

What does mgh stand for

Mass, gravitational pull, height above ground

Gravitational pull on earth

9.8m/s²

What is energy

The ability to do work (make things move)

What is work

The scientific word for “making objects move”

Equation for work

Work=force x distance

Heat v temp

Temp is KE-how fast they are moving

Heat-total amount of energy

What’s thermal energy

Total kinetic energy of all the atoms in an object

What’s a radiometer

A tool that measures radiation waves and light