662 : Topical English Vocabulary Lesson With Teacher Tiffani about Science

In today’s episode, you will learn a series of vocabulary words that are connected to a specific topic. This lesson will help you improve your ability to speak English fluently about a specific topic. It will also help you feel more confident in your English abilities.

5 Vocabulary Words Related to the topic

1. Equilibrium (noun): A state of balance between opposing forces or processes.

    • Example sentences:

° Chemical reactions often reach an equilibrium state where the rates of forward and reverse reactions are equal.

° A skilled tightrope walker maintains perfect equilibrium on the wire.

° The gymnast held himself perfectly in equilibrium on the balance beam.

2. Hypothesis (verb): To propose an explanation that can be tested.

    • Example sentences:

° Scientists hypothesized that a new medication might be effective in treating the disease.

° Based on the observations, the researchers hypothesized that the climate might be changing.

° Engineers often hypothesize different solutions before testing them in prototypes.

3. Variable (noun): A factor that is changed in an experiment to observe its effect on another factor.

    • Example sentences:

° The scientist investigated the effect of light intensity on plant growth, using light intensity as the variable.

° A well-designed experiment has a clear independent variable and a dependent variable that is measured.

° Controlling all variables except the one being tested is crucial for drawing valid conclusions.

4. Observation (noun): The act of noticing or perceiving something.

    • Example sentences:

° Careful observation is essential for scientific inquiry.

° Astronomers use telescopes to make detailed observations of celestial objects.

° The doctor made careful observations of the patient’s symptoms before making a diagnosis.

5. Replication (noun): Repeating an experiment to confirm the results.

    • Example sentences:

° Scientific findings are more reliable if the experiment can be replicated by other researchers.

° Replication helps to ensure that the results were not due to chance or errors.

° To ensure the effectiveness of the new vaccine, researchers conducted replications of the clinical trials at multiple locations worldwide.

A Paragraph using the 5 vocabulary words

Science isn’t about blind guesses. It starts with a puzzling observation, like a plant thriving in shade. This sparks a hypothesis – maybe a certain light level, for plants, is ideal. Scientists then experiment by manipulating a variable while keeping others constant. Careful observation and replication confirm their findings. A combination of observationvariable manipulation, hypothesis testing, and confirmation builds a reliable picture of the world, where explanations find equilibrium with what we see.

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