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4th quarter(8) > science > Flashcards

science Flashcards

1
Q

anything that orbits the sun is part of it

A

solar system

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2
Q

in what year did the IAU come up with the classification of bodies not moons and planets in our solar system

A

2006

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3
Q

bodies that are remnants from the formation of the solar system and contains hydrogen and helium

A

comets

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4
Q

comets orbit the sun and have?

A

visible atmosphere(coma)

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5
Q

name parts of a comet

A
  • ion tail
  • trail of dust
  • nucleaus
  • coma
  • hydrogen envelope
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6
Q

means long haired

A

dust tail kometes

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7
Q

vapor cloud surroding the nucleus

A

coma

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8
Q

trails of plasma

A

ion tail

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9
Q

named after dutch astronomer gerard kuiper and is a donut shaped region of icy bodies which is home to pluto and arrokoth

A

kuiper belt

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10
Q

parts left over from the formation of the solar system

A

kuiper belt

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11
Q

big thick bubble around our solar system name after dutch astronomer hendrik oort

flat plane

A

oort belt

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12
Q

famous comet because it marks the first time astronomers understood comets

A

halley’s comet

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13
Q

remnants of dust from comets and asteroids and glows bright when friction

A

meteoroids

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14
Q

tail formed by burning in the atmosphere

A

falling star or meteorites

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15
Q

celestial event where a number of meteors can be seen

A

meteor shower

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16
Q

beautiful peaks during october and has hailey’s comet

A

orionid meteor shower

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17
Q

best meteor shower peaks mid august, comet swift turtle

A

perseid meteor shower

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18
Q

solid piece of debris

A

meteorites

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19
Q

most common type of meteorite

A

stony

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20
Q

equally proportioned to be stony and iron

A

stony iron

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21
Q

composed of iron and nickel, dense

A

iron

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22
Q

smal rocky heavenly bodies located between mars and jupiter

A

asteroid or planetoids

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23
Q

largest object in the asteroid belt

A

dwarf planet ceres

24
Q

first member of the asteroid belt when Giuseppe Piazzi spotted it in 1801

A

ceres

25
Q

all things are made of earth,fire,water,air

A

primal matter

26
Q

believed water was matter because it was everywhere

A

thales

27
Q

believed fire was matter beacaused it chnged the world

A

heraclitus

28
Q

believed aiir,earth,water and fire were matter

A

aristotle

29
Q

teacher and student who proposed that all things are made of atoms that are indivisible

A

democritus and leucipus

leucipus is the teacher*

30
Q

greek word meaning indivisible

A

atomos

31
Q

void where particles move

A

kenon

32
Q

democritus’ idea matter is made up of indivisible particles and have space between them

A

discontinuous

33
Q

aristotle’s idea of matter indefinitely divisible into smaller pieces and there ae no empty space between particles

A

continuous

34
Q

atleast 2

name the principles of particle nature

A
  1. matter is made up of discrete particles
  2. there is empty space between
  3. particles are in constant motion
  4. forces act between particles
35
Q

explains that all particles are in constant motion

A

kinetic molecular theory of matter

36
Q

particles in motion have?

A

kinetic energy

37
Q

transfer of energy when particles collide and these collisions are?

A

elastic

38
Q

attractive forces that hold particles together

A

intramolecular forces

39
Q

forces of attraction

A

intermolecular forces

40
Q

developed a theory to explain why elements in a compund always join in the same way

A

john dalton

41
Q

all matter are made up are made up of atoms that cannot be divided

A

dalton’s theory

42
Q

more temperature means

A

more kinetic energy

43
Q

ultracold atoms could exist

A

einstein

44
Q

indian physicist that works on statistical mechanics which impressed einstein

A

datyendra nath bose

45
Q

atoms confined in gas act together like a single particle in a temperature close tozero

A

bose-einstein statistic

46
Q

created bose einstein condensate in 1995 using lasers in a vacuum “special cryogenic techniques

A

eric cornell,carl wiman and wolfgang ketterle

47
Q

discovered by sir willim crookes in 1879 via ionization

A

plasma

48
Q

adds energy to gas so that electrons leave the atoms

A

ionization

49
Q

mix of + and - electrons

A

plasma

50
Q

what is this?

has a fixed shape and a fixed volume.
cannot be compressed.
s have a high density.
4) Force of attraction between the particles is very strong.
5) The space between the particles is negligible.

A

solid

51
Q

has a fixed volume but no fixed shape.
can be slightly compressed. large pressure is required to compress them.
have lesser densities than solids.
Intermolecular forces of attraction is weaker than solids.
They have considerable space between the particles.

A

liquid

52
Q

have neither a fixed shape nor a fixed volume.
can be compressed easily
have the least density among the three.
Intermolecular forces of attraction are weakest.
The space between the gas particles is large.

A

gas

53
Q

Classifications of matter

A

Compounds
Mixtures
Elements

54
Q

Believed air was matter

A

Anaximendes

55
Q

Compsed of a single atom

A

Element

4th quarter(8) (19 decks)

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