Question

1. during a temperature experiment, the room gets too warm because a window is open, affecting the results.

source of error:

1. a student forgets to start the timer at the beginning of a reaction and records the time incorrectly.

source of error:

1. a student uses different cups to measure water for each trial, leading to varying amounts.

source of error:

1. a student tests a new battery in a flashlight only once to see how long it lasts.

source of error:

1. a student accidentally uses a dirty beaker that had leftover chemicals from a previous experiment.

source of error:

10)a student changes the amount of light and water given to plants but forgets to keep the temperature constant.
source of error:

Explanation:

1. External environmental factor (room temperature change due to open window) affects experiment, a type of systematic error.
2. Human - error in data collection (improper timing).
3. Inconsistent measurement tool leads to measurement error.
4. Lack of replication in experiment leads to unreliable result, a sampling error.
5. Contamination of equipment (dirty beaker) causes experimental error.
6. Failure to control a variable (temperature) is a experimental design error.

Answer:

1. Systematic error
2. Human error
3. Measurement error
4. Sampling error
5. Experimental error
6. Experimental design error