What did j. j. thomson’s experiments with cathode ray tubes imply about the mass of an electron?
electrons are many thousand times larger than the nucleus and negatively charged.
electrons are many thousand times smaller than the nucleus and positively charged.
electrons are many thousand times smaller than the nucleus and negatively charged.
electrons are many thousand times larger than the nucleus and possess no charge.

Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above