The effect of distance between dominoes and time taken to fall
Introduction
By collecting data whilst keeping all variables constant apart from the independent and dependent variables of an experiment, it is possible to determine a relationship between them. One relationship that can be observed in a laboratory is the relationship between the distance (denoted by symbol d) of separation of dominoes in a domino chain and the time taken (denoted by symbol t) for all dominoes to fall over.
It is expected that greater distances of separation will result in greater time taken for all dominoes to fall over. This is due to the fact that when they are separated by greater distances, the dominoes will have to cover more distance (and …show more content…
d∝t,d∝1/t,d∝√t,d∝t^2) between the distance (d) of the separation between each domino and the time taken (t) for all of the dominoes to fall over?
Variables
Independent variable: The distance between each domino. This will be changed by moving the dominoes. The distance will be measured using a 30cm ruler. The distances being used in this experiment: 0.5cm, 1.0cm, 1.5cm, 2.0cm, 2.5cm, 3.0cm.
Distances greater than 3.0cm are not used as the dominoes would fall over without making contact with each other if the distance between them is greater than 3.0cm. Likewise, a distance of 0.0cm is not used as the ‘domino effect’ would not occur since the force applied to the subsequent dominoes as a result of the ‘gentle push’ (outlined in the Variables and Method sections) applied to the first domino would not be great enough.
Dependent variable: The time taken for all 40 dominoes to fall over. This will be measured through the use of a stopwatch.
Controlled …show more content…
Furthermore, the surface must be uniform (i.e. flat). If it is not, then for each trial, dominoes will be inclined at different angles (e.g. some will be leaning over a bit more than others, this will cause their falling times to be slightly lower). Overall, if the surface is not kept constant, then random error will result. All trials will be done on the same surface (a bench in the