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TERM 2 > Physics SA > Flashcards

Physics SA Flashcards

1
Q

Science

A

A way of understanding the world, based on
observable evidence, reasoning, and repeated
testing.

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2
Q

Scientific Method

A
  1. Observation
  2. Construct a Hypothesis
  3. Experiment
  4. Result Analysis
  5. Conclusion
  6. Communication (Reporting the Result)
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3
Q

Types of Variables

A
  1. Dependent Variable
  2. Independent Variable
  3. Controlled Variable
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4
Q

Dependent Variable

A

The variable that is measured/observed in the experiment.

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5
Q

Independent Variable

A

The variable that is changed throughout the experiment.

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6
Q

Controlled Variable

A

The variable that stays the same in the experiment.

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7
Q

Attitudes of Scientists

A
  1. Curiosity
  2. Open-minded
  3. Objectivity
  4. Integrity
  5. Perseverance
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8
Q

Curiosity

A

Wanting to know more about the unexpected result.

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9
Q

Open-minded

A

Willing to accept that something can happen contrary to the popular belief.

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10
Q

Objectivity

A

Following the facts based on results.

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11
Q

Integrity

A

Never falsely report the result of the observation.

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12
Q

Perseverance

A

Sticking to the truth until the discovery is approved.

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13
Q

Physical Quantity

A

A physical property that can be measured and

described/expressed by a number.

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14
Q

Base Quantity

A

Physical quantities that cannot be defined in any other physical quantities. This includes mass, length, time, temperature, amount of substance, luminous intensity, and electric current.

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15
Q

Derived Quantity

A

Physical quantities which are obtained from the base quantities. This includes volume, density, velocity, force, and acceleration.

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16
Q

Scalar

A

A scalar is a physical quantity that has only a

magnitude. This includes mass, length, time, temperature, volume, and density.

17
Q

Vector

A

A vector is a physical quantity that has both a

magnitude and a direction. This includes position, displacement, velocity, acceleration, momentum, and force.

18
Q

How to find Mass

A

Solid: Measure mass using a balance
Liquid: Final/Total Mass - Mass of Empty Container

19
Q

How to find Volume

A

Regular Solid: Length x Breadth x Height
Irregular Solid: Final/Total Volume - Volume of Liquid
Liquid: Measure volume using a graduated cylinder

20
Q

How to find Density

A

Mass/Volume

21
Q

Measurement

A

To find a number that shows the amount of something.

22
Q

Unit

A

A standard quantity used to express a physical quantity.

23
Q

States of Matter

A

States of matter are the physical forms of matter, which include solid, liquid and gas.

24
Q

Change of State

A

Change of State is change of a substance from one physical state to another.

25
Q

Solid

A

Solid is a state of matter that has its own fixed shape, and its particles are regular and vibrate in its fixed shape.

26
Q

Liquid

A

Liquid is a state of matter that doesn’t have its own shape, and its particles are irregular and can slide past each other.

27
Q

Gas

A

Gas is a state of matter that doesn’t have its own shape, and its particles are irregular and can move freely in all directions.

28
Q

Thermal Expansion

A

Thermal expansion is when something gets bigger when it’s heated.

29
Q

Thermal Contraction

A

Thermal Contraction is when something gets smaller when it’s cooled.

30
Q

Relationship between Temperature and Kinetic Energy

A

The temperature of a substance is a measure of

the average kinetic energy of the particles.

31
Q

Kinetic Model of Matter

A

The kinetic molecular theory of matter offers a description of the microscopic properties of atoms (or molecules) and their interactions, leading to observable macroscopic properties (such as pressure, volume, temperature).

32
Q

Particle Theory of Matter

A
  1. All matter is made up of tiny particles.
  2. The particles have spaces between them
  3. The particles of matter are always moving
    (attracted each other).
  4. Adding heat (energy) to matter makes the particles move faster.
33
Q

Brownian Motion

A

Brownian Motion is when particles in both liquids and gases (collectively called fluids) move randomly.

TERM 2 (8 decks)

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