Topics Studied in 4th Grade Science:
Physical Science: Motion Energy
Life Science: Electrical Units  
Engineer and Design: Animals Senses
Earth and Space: The Ever Changing Earth

Science Standards:
http://www.nysed.gov/common/nysed/files/programs/curriculum-instruction/p-12-science-learning-standards.pdf

Resources:
https://carolinascienceonline.com/#/