Sem 2 unit 3 review

Which of the following would be a subjective observation about a Rice Krispie treat?

• size

• mass

• taste

• weight

Which of the following would be an objective observation about Rice Krispie treats?

• size

• taste

• fluffiness

• how it smells

Which of the following would be a good way to make sure people gathering evidence about Rice Krispie treats are being objective and unbiased in the evidence they gather?

• Decide on the evidence you need before testing

• don't tell the tester which treat was which

• make sure all the treats are the same size

• all of the above

What is potential energy?

• energy in chemicals

• energy from light

• energy from motion

• energy that is stored

Tags

NGSS.MS-PS3-2

 A child riding a bicycle on level ground is an example of:

• Kinetic energy

• potential energy

• neither

• both

Tags

NGSS.MS-PS3-1

 A brand new battery full of power would be an example of:

• Kinetic energy

• potential energy

• neither

• both

Tags

NGSS.MS-PS3-2

A skateboarder skates down a large hill. What happens to his kinetic energy

• decreases

• increases

• stays the same

• becomes negative and he stops

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The melting of ice is an example of what type of chemical reaction?

• exothermic

• endothermic

• combustion

• none of the above

Tags

NGSS.MS-PS1-4

What is the law of conservation of energy?

• matter can not be created or destroyed

• energy can not be created or destroyed

• energy can not be destroyed

• all of the above

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following would be considered “green” energy?

• natural gas

• solar

• nuclear energy

• coal