Scientific Enquiry - Taking accurate measurements using scientific equipment

Measuring Length: Accurately determining the distance between two points using a ruler or tape measure. Units include millimeters ($mm$), centimeters ($cm$), and meters ($m$). Always start measuring from the $0$ mark, not the physical edge of the ruler.

Measuring Volume: Using a measuring cylinder to find the space occupied by a liquid. Units are usually milliliters ($ml$) or cubic centimeters ($cm^3$). To be accurate, read the level at the bottom of the curve called the meniscus.

Parallax Error: This occurs when an object is viewed from an angle. To take an accurate measurement, your eyes must be level with the scale of the scientific equipment.

Measuring Mass: Determining the amount of matter in an object using an electronic balance or scales. Common units are grams ($g$) and kilograms ($kg$). Ensure the balance reads $0 \text{ g}$ (tare) before placing the object.

Measuring Temperature: Using a thermometer to measure how hot or cold something is in degrees Celsius ($^\circ C$). Do not let the thermometer bulb touch the sides or bottom of a heated beaker for an accurate liquid temperature.

Measuring Time: Using a stopwatch to record how long an event takes in seconds ($s$) or minutes ($min$).