In general, what happens to the density of a fluid as it becomes hotter?

Characteristics we use to tell the differences between kinds of matter pare called _ properties

Which has more momentum: a 30 kg bicycle moving at 10 m/s or a 300 kg car at rest? A bicycle B car c they have the same momentum

A young boy was riding his bicycle down the street when he hit a parked car. what was the second collision?

Can we see other planets with the naked eye

An unusual fog that is denser than air begins to fill a room should the people in the room walk out or crawl out

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?

Why should scientists write reports and give oral presentations of the steps and results of their in investigations?