Q: Birds have air sacs that store inhaled air and push it into their what? Choices: - beaks - bones - abdomens - lungs A:
lungs

Q: Isotopes are named for their number of ______ plus neutrons? Choices: - electrons - atoms - nuclei - protons A:
protons

Q: If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. recall that burning is a? Choices: - physical change - temperature change - energy change - chemical change A:
chemical change

Q: What do voltmeters measure? Choices: - temperature - amplitude - frequency - voltage A:
voltage