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問題一覧
1
The movement of an object due to pushing or pulling is called what. There is increase in energy of the object due to this
WORK
2
One of the basic units of matter. It is the smallest particles into which a substance can be divided and still have the chemical identity of the original substance
MOLECULE
3
A testable scientific idea that can be proved right or wrong with experiments.this is a formulation of a question that lends itself to a prediction. This prediction can be verified or falsified. A question can only be used as scientific what, if there is an experimental approach or observational study that can be designed to check the outcome of a prediction
HYPOTHESIS
4
Energy created by filling a reservoir with ocean water at high tide, and later releasing the water through hydroelectric turbines as the tide ebbs to produce electricity
TIDAL ENERGY
5
A measure of the energy available to move charges in a circuit between positively-charged and negatively-charged terminals of a battery: measured in volts (V).
VOLTAGE
6
A type of electricity where the electric charges build up on an object. by rubbing another object. The movement of the charge off the charged object is called what. For example, electric charges built up in rubbing a balloon against your pet's fur
STATIC-ELECTRIC CHARGE
7
A form of electrical energy moving unbalanced charged electrons on an object back to a balanced condition.
STATIC-ELECTRIC DISCHARGE
8
: A circuit in which the current travels along a single path to two or more electric devices; the current must travel though each part of the circuit, one device after the other, in turn
SERIES CIRCUIT
9
A force applied equally to all surfaces of objects or surfaces. Air pressure is the force of all the atmosphere gases pushing down on people at the Earth's surface.
PRESSURE
10
A circuit in which the current travels along two or more separate paths to different devices. The current travels through each part of the circuit devices at the same time.
PARALLEL CIRCUIT
11
No static charge available as the amount of excess (+) electrons is equal to the amount of deficient (-) electrons.
NET CHARGE
12
No static charge and no excess electron or missing electrons.
NEUTRAL CHARGE
13
Energy that uses uranium as a fuel to heat water and produce steam, which tums a turbine and produces electricity
NUCLEAR ENERGY
14
The transfer of thermal energy to other substances that are at a different temperature. Cold things still have heat energy.
HEAT
15
The physics term used to describe the energy applied in various ways to move objects or change their position. This usually involve a push or a pulling and is either balanced or unbalanced by other forces.
FORCE
16
The forces of attraction which the Earth has for objects on its surface; also the force of attraction between any two objects.
GRAVITY
17
Energy obtained from the natural heat of the Earth.
GEOTHERMAL
18
A negatively charged partide that is found outside the nucleus of an atom
ELECTRON
19
It cannot be seen or touched. It is a property of all matter. It comes in many forms and can be transferred from one object to another, but it cannot be created or destroyed; written as the symbol E
ENERGY
20
A magnetic force caused by electric charges in motion; also, the relationship between magnetism and electricity where one can make the other.
ELECTROMAGNETISM
21
A magnet that is created by using electricity in a circuit placed around a piece of metal conductor such as steel or lead
ELECTROMAGNET
22
A device that controls the flow of electric current through a circuit. In an open circuit, a light will be off, in a closed circuit, a light will be on.
ELECTRICAL SWITCH
23
A continuous flow of electric charges moving from one place to another along a pathway, required to make all electrical devices work; measured in amperes (A)
ELECTRIC CURRENT
24
The better term for electricity; the form of energy that consists of a flow of electric charges as the energy is transferred through a conductor
ELECTRICAL ENERGY
25
Energy created by burning any type of plant or animal tissue to heat water and create steam, which turns turbines and generates electricity
BIOMASS ENERGY
26
An energy source that uses a chemical reaction to create an electric current
BATTERY
27
When the total of all forces on an object equals zero and the object's motion does not change.
BALANCED FORCES