chapter 1.2 exam

When Arjun uses an electric air blower to clean his room, which energy transformation takes place?

• Thermal → Electrical → Sound

• Electrical → Mechanical → Sound

• Chemical → Light → Mechanical

• Mechanical → Sound → Chemical

Anika is filling a hot air balloon using hot helium gas. What is the correct energy transformation?

• Chemical → Thermal → Mechanical

• Mechanical → Light → Chemical

• Thermal → Chemical → Light

• Chemical → Mechanical → Thermal

Tags

NGSS.MS-PS3-4

Liam is boiling water in a kettle on a gas stove, and the kettle starts to whistle. Which best describes the energy transformation?

• A) Chemical → Thermal → Sound + Mechanical

• B) Electrical → Thermal → Sound + Light

• C) Thermal → Sound → Light

• D) Light → Chemical → Kinetic

Tags

NGSS.MS-PS3-5

Mia drops a tennis ball from a certain height, and she notices that it bounces back lower than where she dropped it. Why does this happen?

• Energy was created when it hit the ground.

• Energy was destroyed when it hit the ground.

• Some energy transferred to the ground as sound and heat.

• The basketball lost all of its energy.

Tags

NGSS.MS-PS3-5

Which scenario BEST demonstrates the Law of Conservation of Energy?

• A) Benjamin throws a ball, and its energy disappears when it lands.

• B) Sophia pushes a toy car, and it slows down as energy is transferred to the ground.

• C) Rohan notices a fish creates more energy by swimming less.

Tags

NGSS.MS-PS3-5

Grace observes a plant in her garden changing sunlight into sugar during photosynthesis. This is an example of:

• Mechanical → Sound

• Light → Chemical

• Thermal → Sound

• Chemical → Light

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Noah is riding a roller coaster. When the roller coaster is at the top of a hill, it has more potential energy than at the bottom because:

• it is higher above the ground, increasing gravitational potential energy.

• it is moving faster at the top.

• the air pressure is lower at the top.

• it has less mass at the bottom.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Royale rides her bike downhill and speeds up. The type of energy that is increasing is:

• Potential energy

• Thermal energy

• Kinetic energy

• Chemical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Noah uses a battery-powered robot arm to lift a heavy book onto a shelf. Which of the following best describes the energy transformations that occur during this process?

• Chemical energy in the battery is converted to electrical energy, then to kinetic energy, and finally to gravitational potential energy.

• Electrical energy is directly converted to light energy and then to sound energy.

• Kinetic energy is converted to chemical energy and then to thermal energy.

• Gravitational potential energy is converted to chemical energy and then to electrical energy.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Rohan is playing on a swing in the park. At the highest point of the swing, it has the most _______ energy. At the lowest point, it has the most _______ energy.

• At the highest point it has the most potential energy. At the lowest point it has the most kinetic energy.

• At the highest point it has the most kinetic energy. At the lowest point it has the most potential energy.

• At the highest point it has the most thermal energy. At the lowest point it has the most sound energy.

• At the highest point it has the most chemical energy. At the lowest point it has the most electrical energy.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2