Year7P

When you search for a picture using Google Images it is more than likely that you are stealing someone elses work and then, by putting it on your blog you are claiming that it is your own work.

At the least you should be including details about where the picture was from and who made it. But really, you should be seeking permission from the owner of the image to use their work.

Watch a short video about copyright and creative commons. Link. 

Instead use pictures that have been licensed as 'creative commons'. Try this search engine for finding them: link

As well as images, you can find movies, audio and the written word that have been licensed as creative commons.

This link has a list of a large number of sites to find CC media.