To locate images for a PowerPoint presentation or research assignment, it is best to use images from the library databases. These images are for educational purposes only. Many include citations (which you will need to double-check) that you can include in your presentation or research assignment.
Search suggestions for finding images in NOVA Library databases.
If you are looking for stock photos, illustrations, or icons to use, there are many sites that provide free images that are licensed under creative commons or that are in the public domain. Here are some that may be helpful:
Pixabay
Unsplash
Reshot