Question

Objects and conditions that are moving are easier to observe because our senses are especially good at noticing changes in our environment. Which condition does not fit into a moving category?

Options:
A. A rusting hull of a ship.
B. Boiling water in a tea kettle on a gas burner.
C. A campfire reduces wood to ash.
D. A fireworks display.

Answer 1

A rusting hull of a ship does not fit into a moving category because it is a chemical change that occurs without significant motion that is easily observed.

Step-by-step explanation:

The condition that does not fit into a moving category is A. A rusting hull of a ship. Rusting is a chemical change, which means it is a change in the composition of the material. The other options, boiling water, a campfire, and a fireworks display, involve motion or changes that visibly or audibly indicate motion, such as bubbles forming, fire consuming wood, and fireworks exploding in the sky.

Chemical changes are often indicated by changes in energy, unexpected color changes, the production of light, or the formation of gas bubbles when the substance is not boiling. Rusting is a process that includes a chemical change where iron reacts with oxygen to form rust. This occurs without significant motion that is easily observed by the human senses. In contrast, boiling water, a campfire transforming wood to ash, and a fireworks display all have noticeable physical changes and/or visible movement.