Nature of Science Flashcards

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1
Q

Attributes of science

A
  1. Discovers and documents natural phenomena
  2. Constructs and evaluates explanations of phenomena
  3. Objective
  4. Testable
  5. Public
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2
Q

Attributes of Pseudoscience

A
  1. Cannot be tested
  2. Not backed by facts or data
  3. Based on dogma
  4. Lack of evidence against it serves as evidence for it
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3
Q

What is an observation?

A

An observation is something noted or perceived using one or more of the five senses.

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4
Q

What is an inference?

A

An inference is a conclusion reached by using prior observations. Inferences may change as new observations are made.

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5
Q

What is biology?

A

From words “bios” and “logia”. Means “study of life”.

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6
Q

What is chemistry?

A

The branch of science that deals with the changes and reactions between substances.

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7
Q

What is physics?

A

The branch of science concerned with the nature and properties of matter and energy.

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8
Q

What is geology?

A

The study of the structure of the earth and its origin.

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9
Q

What is astronomy?

A

The study of the observable universe beyond the atmosphere of Earth.

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10
Q

What is an atom?

A

The smallest amount of matter that can exist while being recognized as pertaining to a certain substance. Makes up all matter.

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11
Q

What is a proton?

A

A positive sub-atomic particle.

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12
Q

True or False: Neutrons are positive sub-atomic particles.

A

False. Neutrons are neutral.

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13
Q

True or False: Electrons are negative sub-atomic particles.

A

True.

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14
Q

True or False: Atomic mass depends on the amount of protons in the nucleus of an atom.

A

False. Atomic mass is roughly the number of protons and neutrons in an element (explanation: they both weigh about 1u).

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15
Q

True or False: The Atomic number depends on the amount of protons an element has.

A

True.

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16
Q

What is the periodic table of elements?

A

A form of classification for all the known elements. Grouped based on atomic mass.

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17
Q

What are the columns in the periodic table known as?

A

Groups or families.

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18
Q

What are the rows in the periodic table known as?

A

Periods.

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19
Q

What are elements?

A

Pure substances that cannot be broken down by physical or chemical means.

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20
Q

Who is Dmitri Mendeléev?

A

The creator of the first version of the table of elements (1869).

21
Q

Inference or an observation? If it’s an observation, what kind?- The grass is wet.

A

Observation; qualitative.

22
Q

Inference or an observation? If it’s an observation, what kind?- The bird is a foot tall.

A

Observation; quantitative.

23
Q

Inference or an observation? If it’s an observation, what kind?- The rock was formed by volcanic activity.

A

Inference.

24
Q

What are some types of pseudosciences?

A

Astrology, herbalism, creationism (intelligent design), numerology, 2012 apocalypse, psychokinesis, polygraphy, hypnosis, dowsing, and homeopathy.

25
Q

What are some pseudosciences?

A

Astrology, numerology, 2012 apocalypse, psychokinesis, polygraphy, creationism (intelligent design), herbalism, hypnosis, dowsing, and homeopathy.

26
Q

What is a qualitative observation?

A

An observation based on measurements.

27
Q

What is a qualitative observation?

A

An observation based on descriptive language (e.g. something being “smelly”, “sour”, or “white”).

28
Q

Inference or an observation? If it’s an observation, what kind?- The grass is wet.

A

Observation; qualitative.

29
Q

What are the layers of the earth?

A

Core (mainly iron and nickel, solid), mantle (mostly iron and magnesium, liquid), and crust (mostly oxygen and silicon, outer layer).

30
Q

What are some sciences?

A

Chemistry, geology, biology, and physics.

31
Q

Where are the alkali metals and what do they have in common?

A

Group IA (excluding Hydrogen). They each have 1 electron in its outer shell.

32
Q

Where are the alkaline earth metals and what do they have in common?

A

Group IIA. They are all metals and have 1 electron in each elements’ outer shell.

33
Q

Where are the transition elements and what do they have in common?

A

Group B. They are all metals despite the fact that the number of electrons in each respective elements’ outer shell vary.

34
Q

Where is the boron family and what do they have in common?

A

Group IIIA. 3 electrons in each elements’ outer shell.

35
Q

Where is the carbon family and what do they have in common?

A

Group IVA. 4 electrons in each elements’ outer shell.

36
Q

Where is the nitrogen family and what do they have in common?

A

Group VA. 5 electrons in each elements’ outer shell.

37
Q

Where are the alkaline earth metals?

A

Group IIA.

38
Q

Where are the transition elements?

A

Group B.

39
Q

Where is the boron family?

A

Group IIIA.

40
Q

Where is the carbon family?

A

Group IVA.

41
Q

Where is the nitrogen family?

A

Group VA.

42
Q

Where is the oxygen family and what do they have in common?

A

Group VIA. 6 electrons in each elements’ outer shell.

43
Q

Where are the halogens and what do they have in common?

A

Group VIIA. 7 electrons in each elements’ outer shell.

44
Q

Where are the noble gases and what do they have in common?

A

Group VIIIA. All contain a full set of electrons in each elements’ outer shell.

45
Q

Where is the lanthanide series and what do they have in common?

A

Group B. They are all rare-earth elements.

46
Q

Where is the actinide series in the periodic table and what do they have in common?

A

Group B. They are radioactive and mostly man-made.

47
Q

How many spheres is the earth composed of and what are they called?

A

Four. The lithosphere, atmosphere, hydrosphere, and biosphere.

48
Q

What is the lithosphere?

A

(Also known as solid Earth) Consists of the planet’s core, mantle, and crust.