Science skills

What is accuracy in measurement?

Accuracy refers to how close a measurement is to the true value.

What is precision in measurement?

Precision refers to how close multiple measurements are to each other, indicating a small spread of data.

What does it mean for an investigation to be repeatable?

An investigation is repeatable if the same person can conduct it over and over and get the same results.

What does it mean for an investigation to be reproducible?

An investigation is reproducible if another person can conduct it and get the same results.

What are anomalies in data?

Anomalies are values in a set of data that do not fit the observed pattern.

What type of data can take any numerical value within a range?

Continuous data can take any numerical value within a range.

What is discontinuous data?

Discontinuous data can only take specific, separate values.

What is an independent variable in an experiment?

The independent variable is the variable that you change in an experiment.

What is a dependent variable in an experiment?

The dependent variable is the variable that you measure in an experiment.

What is a control variable?

A control variable is a variable that is kept the same throughout an experiment to ensure that only the independent variable is affecting the dependent variable.

What was the aim of the electromagnetism investigation?

To investigate how the number of turns in a coil affects the strength of an electromagnet.

What safety precautions are mentioned for the electromagnetism investigation?

Do not touch the wire; turn off the power between readings. Do not set up near water.

What does the equation for resistance indicate?

Resistance (Ω) = Voltage (V) / Current (A).

What equation is used to calculate speed?

Speed (m/s) = Distance (m) / Time (s).

What is the aim of investigating crater size from falling asteroids?

To investigate how the characteristics of a falling asteroid affect the size of the crater formed.

What are the safety measures for heating magnesium?

Wear eye protection, use tongs to handle apparatus, and do not look directly at burning magnesium.

What does the hazard symbol for 'flammable' indicate?

It indicates a substance that can easily catch fire.

How is acceleration calculated?

Acceleration (a) = Change in speed (Δv) / Change in time (Δt).

What is the safety measure while performing yeast respiration experiments?

Do not eat the dough and wear eye protection.

What is the difference between repeatable and reproducible investigations?

Repeatable means the same person gets the same result, while reproducible means another person gets the same result.

What type of graph is used to represent the relationship between the number of turns in a coil and magnetic strength?

A line graph with the number of turns on the x-axis and the number of paper clips picked up on the y-axis.

What is a hazard symbol for 'acute toxicity'?

Indicates a substance that can cause harm or death if inhaled, swallowed, or absorbed through the skin.

What variables are controlled during the speed of a toy car investigation?

Length of the ramp and type of car.