These images are meant for commercial use, but students may use images for visual reference. Make sure to follow licensing and copyright restrictions and get the proper permissions when you use any images for a film you intend to show beyond the classroom.
Use Google to find images on government or nonprofit websites, as well as images on websites from specific countries
This search will exclusively return results from government website
To find websites from other countries, use the Country Domain Codes:
floods images site:in
Will exclusively retrieve websites from India