UNIT 2 Test Preparation!

What is the sequence of Energy Transformations that occur when a battery-operated flashlight is turned on?

• chemical → light → electrical

• chemical → electrical → light

• electrical → light → chemical

• electrical → chemical → light

Tags

NGSS.MS-PS3-5

A variety of energy transformations occur in different situations. Which of the following statements involves the change from chemical to electromagnetic to mechanical to sound energy?

• A stove top feels hot

• A soccer player kicks a soccer ball.

• A cell phone plays a music video.

• The sun heats the sand at the beach.

When a basketball is dropped from a balcony, and it repeatedly bounces from the ground to up in the air, it has changing amounts of potential and kinetic energy. Eventually the ball will stop bouncing and come to rest. Which of the following best describes why the ball stops bouncing?

• The ball’s energy is transformed into chemical energy.

• The ball’s energy gets transformed to heat and sound energy.

• The mass of the ball is too small to allow the ball to continue its own motion.

• The pull of gravity is stronger than the energy in the ball, which makes the ball stop bouncing.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-5

Which of the following is the best example of solar energy being converted into chemical energy?

• photosynthesis

• microwaving food

• condensation of water into clouds

• heating up water

Tags

NGSS.MS-LS1-6

A student observes a beaker of room temperature water resting on a table. She states that the beaker of water does not have any energy. Which statement below is accurate regarding her observation?

• She is correct because the beaker of water is not moving.

• She is incorrect because the beaker of water has thermal energy.

• She is incorrect because all water contains hydrogen and oxygen.

• She is correct because the beaker of water is at room temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Franklyn goes to a bowling alley to test his belief that rolling a bowling ball slowly will result in knocking down more pins. He gently rolls his bowling ball towards the bowling pins lined up at the end of the lane. The bowling ball stops in the middle of the lane without striking the pins. Which statement below best explains what happened?

• The ball's kinetic energy is transforming to potential energy.

• The ball needs more thermal energy to knock down the pins.

• Some of the ball’s kinetic energy is transformed into sound and thermal energy.

• The chemical energy of the lane reduces the mechanical energy of the bowling ball.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which statement below best describes why the table feels cold to your hands?

• The table feels cold because it is at a lower temperature than the air in the room.

• The table feels cold because it is solid, and solids hold thermal energy better than air.

• The table feels cold because it is at a lower temperature than your hands, and thermal energy is being transferred into the table.

• The table feels cold because it is at a lower temperature than your hands, and thermal energy is being transferred into your hands.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The rise in temperature (to 100 degrees Celsius) changes water from liquid to vapor (a gas). Which of the following statements is true?

• Temperature PHYSICALLY changed the matter

• Temperature CHEMICALLY changed the matter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A cup of chocolate milk was placed into a freezer, and has turned from a liquid to a solid state. Which statement below is true?

• Temperature has physically changed the matter.

• Temperature has chemically changed the matter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If one metal plate is 10 degrees Celsius, and is made to touch another metal plate that is 50 degrees Celsius, what will happen?

• Heat will transfer from the plate that is 50 degrees to the cooler plate, until both plates are the same temperature (around 30 degrees Celsius).

• Heat will transfer from the cold plate to the hot plate until both plates are the same temperature (around 30 degrees Celsius).

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5