Question

A glass thermometer.
Which help you ensure that temperature readings are accurate? Check all that apply.

shaking the thermometer before use

using the thermometer as a stirring rod

making sure that the liquid inside the thermometer is at eye level when taking the temperature

making sure that the bulb of the thermometer does not touch the bottom the beaker or the ice when taking the temperature

using the Celsius scale instead of the Fahrenheit scale when taking temperature readings

Answer 1

Correct choices: shaking the thermometer before use; making sure the liquid inside the thermometer is at eye level when taking the temperature; making sure the bulb of the thermometer does not touch the bottom of the beaker or the ice when taking the temperature.

Why:
- Shake down (for liquid‑in‑glass thermometers) so the liquid column starts low and can rise to the true temperature.
- Reading at eye level avoids parallax error.
- If the bulb touches the container bottom or the stirring rod/ice, you can get a false reading from conduction or a different temperature region.

Do not use the thermometer as a stirring rod (it can break and give wrong readings), and choosing Celsius vs Fahrenheit does not affect accuracy — it only changes the units.