Question

william is conducting an experiment to see whether objects float or sink in water depending on their density. he makes certain that each object he tests is the same shape and volume. he also uses the same amount of water in each trial. which of these are constants in william’s experiment?

the density of each object
whether the object sinks or floats

the volume of each object

the amount of water he uses

the shape of each object

Explanation:

1. Analyze "the density of each object": The experiment is about how density affects floating/sinking, so density varies (independent variable), not a constant.
2. Analyze "whether the object sinks or floats": This is the dependent variable (outcome), so it varies, not a constant.
3. Analyze "the volume of each object": The problem states each object has the same volume, so volume is constant.
4. Analyze "the amount of water he uses": The problem states the same amount of water is used in each trial, so water amount is constant.
5. Analyze "the shape of each object": The problem states each object has the same shape, so shape is constant.

Answer:

• the volume of each object
• the amount of water he uses
• the shape of each object