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ewkqkewqewq > science > Flashcards

science Flashcards

1
Q

average kinetic energy present in a system

A

thermal energy

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2
Q

energy that is transferred from one body to another as the result of a difference in temperature

A

heat

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3
Q

measure of hotness or coldness of an object

A

temperature

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4
Q

describes the flow of heat (thermal energy) due to temperature differences and the subsequent temperature distribution and changes

A

heat transfer

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5
Q

the process by which heat occurs through a medium from one point to another

A

conduction

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6
Q

the transfer of heat through the actual physical movement of fluid

A

convection

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7
Q

the transfer of thermal energy by the electromagnetic (EM) waves

A

radiation

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8
Q

basic property of matter carried by some elementary particles that governs how the particles are affected by and electric or magnetic field.

A

Electric charge

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9
Q

coulomb (c)

A

electric charge

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10
Q

law of charges

A

like charges repel opposites attract

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11
Q

the principle that the total electric charge in an isolated system never changes

A

law of conservation of charge

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12
Q

when insulating materials rub against each other, they may become electrically charged

A

charging by friction

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13
Q

a method used to charge an object without actually touching the object to any other charged object

A

charging by induction

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14
Q

involves the contact of a charged object to a neutral object

A

charging by conduction

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15
Q

the action of changing location or position

A

motion

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16
Q

like a composite photo that shows the position of an object at several equally spaced time intervals

A

motion diagram

17
Q

the total length of path traveled by a moving object regardless of the direction of motion

A

distance

18
Q

the objects change in position going to a particular direction

A

displacement

19
Q

defined as the distance covered per time of travel

A

speed

20
Q

computation of speed

A

s=d/t

21
Q

is when speed is accompanied by direction

A

velocity

22
Q

plant cell

A

matthias schleiden (1838)

23
Q

animal cell

A

theodore schwann (1855)

23
Q

similarities

A

DNA, Plasma membrane, Cytoplasm, Ribosomes

24
Q

Differences

A

DNA, organelles, reproduction, average size

25
Q

a porous and semipermeable membrane that surrounds an animal cell

A

plasma membrane / cell membrane

26
Q

contains the instructions for everything the cell does

A

nucleus

27
Q

a network of membranes found within almost all eukaryotic cells.

A

endoplasmic reticulum (ER)

28
Q

involved in the process synthesizing proteins

A

ribosomes

29
Q

where energy is released from the breakdown of food into carbon dioxide and water

A

mitochondrion (mitochondria)

30
Q

modifying cellular substances out of the cell

A

Golgi apparatus

31
Q

the waste disposal unit of the cell.

A

Lysosome

32
Q

membrane bound sacs within the cytoplasm of a cell that function in several different ways

A

Vacuoles

33
Q

small organelles perform a number of functions regarding the digestion of compounds such as fats, amino acids, and sugars.

A

Peroxixome

34
Q

involved in cell division and the production of flagella and cilia

A

Centrosomes

35
Q

needle like growths that extend from the plasma membrane of a cell.

A

Villi

36
Q

a long thin extension of the plasma membrane and is driven by a cellular engine made from proteins.

A

Flagellum (Flagella)

37
Q

one of the most important distinguishing features of plant cells.

A

Cell wall

38
Q

one of several different types of plastids, plant cell organelles that are involed in energy storage and the synthesis of metabolic materials

A

Chloroplasts

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