4.1.7

Variables - Common Experiments

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Variables - Common experiments

Rolling a ball down a ramp is a common experiment. Dissolving magnesium in acid is a common experiment. These common experiments have variables.

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Common experiments

  • Common experiments include:
    • Rolling a ball down a ramp.
    • Checking which acid dissolves a ribbon of magnesium the quickest.
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Rolling a ball down a ramp

  • This experiment aims to learn whether the height of a ramp affects speed.
    • The independent variable is the height of the ramp.
    • The dependent variable is the speed of the ball.
  • Control variables include:
    • The material of the ball
    • The material of the ramp
    • The mass of the ball
Illustrative background for Dissolving magnesiumIllustrative background for Dissolving magnesium ?? "content

Dissolving magnesium

  • This experiment aims to learn which acid dissolves a ribbon of magnesium fastest.
    • The independent variable is the type of acid.
    • The dependent variable is how quickly the magnesium dissolves.
  • Control variables include:
    • The volume of the acid
    • The concentration of the acid
    • The length of the magnesium ribbon
    • The mass of the magnesium ribbon

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1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

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2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Disciplinary Knowledge

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