If it is a science speech, yes
a speech is good when the topic you've brought forward involves your audience and you present it in a simpler way as possible and lastly a speech is good when you understand your topic
A good speech topic is one that interests both you as the speaker and your audience. It should be relevant, timely, and have a clear purpose or message. Additionally, a good speech topic should be specific enough to be manageable within the time frame of the speech.
accomplishment speech
Speech of mother good
* / ===
gun control
well it depends
Black History is a good subject to create topics for a speech but it can't be a topic itself.
Anything would be a good topic so long as you do your research and know enough about it.
A good topic would depend on where you are presenting it in front of what kind of people you are presenting it to.
Egypt is a good topic