2. energy is constantly converted into different forms. in which of the following scenarios is chemical energy converted into mechanical energy? a) light from the sun strikes a solar cell, which generates an electric current. b) a match is struck and ignites. c) electric current flows through a light bulb filament. d) a girl uses her muscles to lift a box off of the floor.

Which of the following discoveries would be most likely to cause a scientific paradigm shift? a. the discovery of more rings around uranus b. the discovery of a new pathogenic virus transmitted by mosquitoes c. the discovery that a dormant volcano is showing signs of activity d. the discovery of a new species of salamander in the amazon rainforest e. the discovery that excess heat is radiating from the center of the earth and causing global climate change