Flashcard Set Preview
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| 1 |
In science you progress from ____, ____, ___,____ and _____
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observation, data hypothesis, theory and law
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| 2 |
Forces are ______quantities
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vector
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| 3 |
All measurements are _______
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approximate
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| 4 |
A small amount of _____ can produce a large amount of _______
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massenergy
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| 5 |
The sun's energy comes from
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_______ _________
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| 6 |
A girl roller skating has ______ energy
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kinetic
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| 7 |
Radiant heat can travel through a _______
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vacuum
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| 8 |
A boy lifting a box does _____
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work
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| 9 |
A student who carries a book across the library floor does ____ work
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NO
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| 10 |
Most acids are sour and ____ metals
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corrode
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| 11 |
If red litmus paper remains red in a solution, the solution ___ be an acid
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MAY
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| 12 |
A high PH level inidcates many _____ _____
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hydroxide ions
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| 13 |
_______ help the flow of electricity in water.
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Electrolytes
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| 14 |
A chloride ion has more electrons than ______
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protons
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| 15 |
Heat can be added to ice water _____ changing its temperature
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without
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| 16 |
When you melt ice, its volume ______
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decreases
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| 17 |
The first book printed by a printing press with moveable type was the ______
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Bible
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| 18 |
Sharpening a pencil is ______ a chemical change
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NOT
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| 19 |
In _____ _____, four hydrogen atoms come together to form one helium atom
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atomic fusion
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| 20 |
A uranium 235 atom can be split using a ______
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Neutron
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| 21 |
If water is evaporated after a neutralization reaction, a _____ remains
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salt
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| 22 |
The sun's energy comes from _____
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fusion
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| 23 |
The atomic mass is a measure of an atom's _____ plus _____
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protons plus neutrons
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| 24 |
The usual order of learning & benefitting from the study of nature is _____, then _____,...
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science, then technology, then industry
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| 25 |
The best test of a hypothesis is an
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experiment
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| 26 |
A _____ has a definite shape and definite volume
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solid
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| 27 |
A _____ has a definite volume, takes the shape of the container (NO definite shape), and has...
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Liquid
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| 28 |
A _____ takes the shape and volume of the container (NO definite shape and NO definite volume)
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Gas
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| 29 |
_____is acetic acid. ____ and citric fruits give a tart taste to foods.
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Vinegarvinegar
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| 30 |
Milk makes buttermilk because of the action of _____ _____.
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lactic acid
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| 31 |
Batteries use sulfuric acid for their _______
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electrolyte
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| 32 |
_______ acid helps digest food in your stomach
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Hydrocholric
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| 33 |
Explosives are made from _____ _____
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nitric acid
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| 34 |
A pendulum has no _____ energy and maximum _____ energy at the top of its swing.
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kineticpotential
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| 35 |
The pendulum has no ______ energy and maximum _______at the bottom of the swing
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potentialkinetic
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| 36 |
Everywhere but the bottom and the top of a pendulum's swing has _____ kinetic and potential...
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both
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| 37 |
A magnetic field is _____ affected by paper, glass, or plastic
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NOT
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| 38 |
______magnetic poles repel, ______ poles attract
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LikeUnlike
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| 39 |
An electromagnet can be turned ____ and ____
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on/off
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| 40 |
Charged objects attract _____ objects
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uncharged
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| 41 |
When you comb your hair, ______ are transferred to your hair
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Electrons
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| 42 |
An ______ measures small charges
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electroscope
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| 43 |
When electrons are removed from an object is is said to be ________ charged
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positively
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| 44 |
Touch a paper clip to a _____ and the paper clip becomes _______
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magnetmagnetized
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| 45 |
Ohm's Law states that
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"volts equals amperes times ohms"
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| 46 |
A switch and a fuse both function to _____ an electrical circuit.
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interrupt
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| 47 |
Most of the world uses what measurement system?
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Metric system
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| 48 |
The legal system of measure in the US is
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the Metric System
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| 49 |
____ _____ is done if you push against the wall and the wall does not move.
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NO work
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| 50 |
It is easier to ____ a sled moving, than to ____ it moving.
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keepstart
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| 51 |
_____ always opposes motion
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Friction
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| 52 |
In order to multiply and effort force, the effort force must move ____ distance than the resistance...
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MORE
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| 53 |
Machines always require more work _____ than their ______ work
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inputoutput
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| 54 |
If bowling ball and a baseball are dropped from a gym balcony, they will fall at the _____...
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SAME
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| 55 |
An _____resists the flow of electrons
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insulator
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| 56 |
The unit of electrical power is the _____
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watt
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| 57 |
A _______changes mechanical energy to electrical energy
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generator
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| 58 |
a ______ is the path of moving electrons
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circuit
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| 59 |
Electrical resistance is measured in _____
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ohms
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| 60 |
An _____ is the measure of moving charged particles
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ampere
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| 61 |
Electromotive force is measured in _______
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volts
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| 62 |
Every action is accompanied by an equal opposite reaction
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3rd law
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| 63 |
An object will remain at rest until it is pushed or pulled
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1st law
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| 64 |
Explains how force, amass and acceleration are related
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2nd law
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| 65 |
As you step to the dock, our canoe moves away
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3rd law
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| 66 |
to ove a train requires a big force
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2nd law
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| 67 |
why people should war a seat belt
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1st law
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| 68 |
The ____ ____ ____ (___) is the effort distance divided by the resistance distance
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Ideal Mechanical Advantage IMA
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| 69 |
The _____ ______ _____ (___) is the ratio of the resistance force to the effort
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actual mechanical advantage AMA
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| 70 |
If you double your distance from a magnet, the magnetic force will be ___ ____ as much
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one fourth
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| 71 |
Magnetic field lines of force will not go through _____
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steel
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| 72 |
The magnetic field around a current-carrying wire will be at _____ _____ and in ______ _____...
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right anglesconcentric circlestoward
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| 73 |
Man has used ______ energy longer than any other energy
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solar
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| 74 |
____ is the most abundant fuel in the US
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coal
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| 75 |
The energy of motion is called _____ energy
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kinetic
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| 76 |
Stored energy is called ______ energy
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potential
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| 77 |
______ is equal to work divided by time
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power
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| 78 |
The ____ of surfaces in contact and the _____of the sliding object determine friction. Surface...
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compositionweightlittle, or no effect
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