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Grade 9 science > Unit 1 > Flashcards

Unit 1 Flashcards

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0
Q

Independent variable

A

The cause

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1
Q

Hypothesis

A

An educated guess about the relationship between the independent and dependent variable

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2
Q

Dependent variable

A

The effect

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3
Q

Controlled variable

A

Is something that always stays the same

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4
Q

HHPS

A

Hazardous household product symbol

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5
Q

WHMIS

A

Workplace hazardous material information system

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6
Q

Mass

A

The amount of particles in an object

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7
Q

Weight

A

The force of gravity acting on an object

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8
Q

Volume

A

The amount of space occupied by an object

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9
Q

Quantitative

A

Observations based on measurements or counting

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10
Q

Solubility

A

How much of a substance can be dissolved in a solvent

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11
Q

Observation

A

A description of an object or event using your senses

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12
Q

Ductility

A

The ability of a substance to be stretched out into a wire-like shape

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13
Q

Malleability

A

The ability of a substance to be moulded or flattened into a sheet

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14
Q

Viscosity

A

The thickness

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15
Q

State of matter

A

A solid liquid or gas

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16
Q

Translucent

A

Half see through

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17
Q

Transparent

A

See through

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18
Q

Opaque

A

Non see-through

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19
Q

Colourless

A

Has no colour

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20
Q

Crystalline

A

Containing the nature of crystals

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21
Q

Form (give an example)

A

A way of describing every object ex: crystal , powder

22
Q

Inference

A

An educated guess of what an observation means

23
Q

Clarity

A

The ability of a substance to transmit light

24
Q

Lustre

A

The ability of a substance to reflect light

25
Q

Qualitative

A

Describes measurable characteristics of a substance

26
Q

Line graph (give an example)

A

Both dependent and independent variables are quantitative example: distance vs time

27
Q

Bar graph (give an example)

A

One is qualitative and the other is quantitative example: amount of precipitation per month

28
Q

Pie graph (give an example)

A

One is qualitative and the other one is quantitative and changed to a percentage ex: percentage of students vs favorite type of music

29
Q

Corrosive

A

A substance capable of exploding or destroying itself

30
Q

Biohazard

A

A virus or toxic hazard to humans

31
Q

Meniscus

A

A curved substance

32
Q

What are the steps in a scientific method ?

A
  1. Clearly states a goal or objective
  2. Provide an overview or list of materials needed
  3. Address any safety procedures that need to be followed
  4. Include all the steps for the procedure
  5. Use diagrams for clarification is needed
  6. The instructions that are completely in step-by-step fashion
33
Q

What are all the six criteria of science?

A
  1. Consistent
  2. Observable
  3. Natural
  4. Predictable
  5. Testable
  6. Tentative
34
Q

Give a testable question

A

Does this type of soil make the plant grow faster?

35
Q

Which one is the independent variable: If the amount of sunlight the plant gets increases, then the growth increases

A

The amount of sunlight

36
Q

Give a proper hypothesis for an experiment

A

Is the height that the rubber ball is dropped from increases, the height that it bounces up increases

37
Q

What does a rubber stopper do?

A

It plugs the mouth of the flasks so contents don’t spill or evaporate

38
Q

Graduated cylinder

A

Accurately measures amounts of liquids

39
Q

Bunsen Burner

A

Produces a flame to heat chemicals

40
Q

Beaker tongs

A

Safely transport a hot beaker from place to place

41
Q

Retort stand

A

Clamps will attach to it to hold objects in the air

42
Q

Test tube holder

A

Used to carry a hot test tube

43
Q

Test tube rack

A

Holds test tubes

44
Q

Mortar and pestle

A

Used to crash solids into smaller pieces or powder

45
Q

Ring clamp

A

Attaches to support stand to hold objects

46
Q

Beaker

A

Holds Liquids for experiments

47
Q

Scopula

A

Used to scoop chemicals out of jars

48
Q

Erlenmeyer flask

A

Holds liquids, if shaken Liquids won’t easily spill out

49
Q

Wire gauze

A

Placed on a ring clamp so a ring clamp can be placed on top

50
Q

Test tube

A

Can hold small amounts of solids or liquids for experimentation

51
Q

List the names of the 10 safety rules

A
  1. Better safe then sorry 2. Safety glasses 3. Horse play out 4. Clean up all messes 5. Bunsen burner safety 6. Smelling chemicals 7. Heating substances 8. No eating in the classroom 9. Eliminate clutter 10. In case of an emergency
52
Q

What’s the difference between HHPS and WHMIS

A

HHPS is stuff you would find at home and WHMIS is stuff you would find at a workplace

Grade 9 science (3 decks)

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