Some highly recommend science apps:
Science 360 App Access videos, images and news on a variety of topics.
iSeismometer Converts iPhone or iPad into a seismometer. Created for fun and educational uses.
The Elements: A Visual Exploration: Not free, but worth the money. Described as "A Visual Exploration is not a reference app, it is a rich and engaging love story of the periodic table, told in words and pictures." For just a reference app, you may want to check out: Quick Periodic Table of the Elements By Quick Learning LLC Open iTunes to buy and download apps. With this application, one can look up information on 117 different elements.
TinkerBox HD By Autodesk Inc. TinkerBox is a fun, free-to-play physics puzzle game. While it is full of interesting science facts and teaches basic engineering concepts, TinkerBox is more than just educational!
Leafsnap is the first in a series of electronic field guides being developed by researchers from Columbia University, the University of Maryland, and the Smithsonian Institution.
Miscellaneous Science web resources
Animated Science Lessons for Children via Richard Byrne's Blog.
A few Science resources from my other blog postings:
Science resource for the primary grades:
Children's University of Manchester has animated lessons covering seven science subjects for primary students: bit.ly/PEvGWf (I noticed these animations can go full screen too, but a few error on the full screen view... I am sure that is on their fix-it list.)