body systems, physical and chemical changes, energy transfers

When you eat food and use it to move, what kind of energy transfer is taking place?

• Chemical to electrical

• Chemical to mechanical

• Mechanical to electrical

• Radiant to chemical

What kind of energy transfer happens in plants during photosynthesis?

• Thermal to chemical

• Chemical to mechanical

• Light to electrical

• Radiant to chemical

How is chemical energy (food) taken in during digestion transformed?

• It is not transformed

• It is transformed into mechanical energy.

• It is transformed into electrical energy.

• It is transformed into radiant energy.

What kind of energy is sent by the brain to coordinate movement?

• Chemical

• Thermal

• Electrical

• Mechanical

What is thermal energy?

• Energy that comes from food.

• Energy an object has because of it's motion.

• Energy that is stored.

• Energy that provides warmth for the body.

Which answer choices are evidence of a chemical change?

• Unexpected color change

• Bubbles

• Change of state

• Precipitate

• Change in shape

Which answer choices are evidence of a chemical change?

• Expected color change

• Smell

• Change in temperature

• Light

• Change in size

If a new substance is formed, then (a) ________ change has occured.

• no

• chemical

• physical

• property

Which is an example of a physical change?

• burning a match

• frying an egg

• boiling water

• baking a cake

What is the function of the reproductive system?

• to produce offspring

• to control the movement of the body

• to continue the species

• to breakdown food for energy