Energy Transformation Digestion

1 A group of students are investigating the transformation of energy during digestion. The initial temperature of hydrogen peroxide in a beaker is measured and recorded. Small pieces of liver are placed into a beaker of hydrogen peroxide and the temperature is measured and recorded every 30 seconds over a two minute time period.

What energy transformation is under investigation in the scenario above?

• A Thermal energy transformed into chemical energy

• B Chemical energy transformed into thermal energy

• C Chemical energy transformed into mechanical energy

• D Mechanical energy transformed into thermal energy

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-4

2 Which of the following best illustrates the transfer from chemical energy to thermal energy?

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3 Which is the best description of thermal energy?

• A A kind of chemical energy

• B A kind of potential energy

• C A kind of heat energy

• D A kind of light energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

4 Which of the following best illustrates the transfer of from radiant energy to thermal energy.

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5 Which of the following energy transformations occur when humans use energy from food to exercise?

• A Mechanical --> thermal --> chemical

• B Thermal --> electrical --> mechanical

• C Radiant --> mechanical --> thermal

• D Chemical --> mechanical --> thermal

Tags

NGSS.MS-LS1-7

NGSS.MS-PS3-5

6 What energy transformation takes place when a rabbit digests a carrot?

• F Radiant energy is transformed into chemical energy.

• G Chemical energy is transformed into heat and thermal energy.

• H Radiant energy is transformed into mechanical and heat energy.

• J Thermal energy is transformed into mechanical energy.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-6

7 Which of the following best describes the energy conversions that occurs during photosynthesis?

• A Chemical energy is changed into solar energy.

• B Solar energy is changed into mechanical energy.

• C Chemical energy is changed into heat energy.

• D Solar energy is changed into chemical energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

8 Metabolism refers to the living organisms' bodies chemical processes of breaking down nutrients into energy. What do biologists call this process in the human body?

• F Ingestion

• G Digestion

• H Elimination

• J Regurgitation

9 Animals are consumers, meaning they need to eat food for energy because they cannot make their own. Which energy transformation is taking place when an animal eats food so it can keep warm?

• A Mechanical to thermal

• B Mechanical to radiant

• C Chemical to thermal

• D Radiant to chemical

10 Which of the following transforms energy from chemical to mechanical to thermal?

• F Photosynthesis

• G Digestion

• H Exercise

• J Boiling

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-6