Homework Chapter 2 - Energy

What is the primary source of energy for the Earth?

• Water

• Wind

• Sun

• Soil

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

When you turn on a light bulb, what is the electrical energy changed into?

• Kinetic and heat energy

• Light and heat energy

• Light and kinetic energy

• Light and chemical energy

Which of the following is the example of potential energy?

• A stretched rubber band

• A flashlight turned on

• A moving car

• An egg cooked

Tags

NGSS.MS-PS3-2

Which of the following is the correct energy chain of energy changes to show about the picture?

• Heat energy → light energy

• Light energy → electrical energy

• Heat energy → electrical energy

• Light energy → heat energy

Study the picture. Arrange the energy chain in order based on the picture shown.

• kettle

• surrounding environment

• water

• cup

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Ms. Arsa makes a cup of hot tea. She puts it on the table while she watches a Korean drama. After a while, the tea is not hot anymore. Where does the heat go to?

• The heat energy is gone

• The heat energy has moved because of the wind

• The heat energy is transferred to the water

• The heat energy is transferred to the surrounding air

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When a blob of butter melts in a spoon placed in a hot cup of water, what happens to the heat from the water during this process?

• The heat from the water moves to the spoon and then warms the butter until it melts

• The heat from the butter escapes into the air, causing the butter to melt

• The heat from the spoon cools down, which makes the butter melt

• The heat from the water transforms into light energy, making the butter melt

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Match the following object with the correct energy changes that happened on each object when it works.

• Movement -> heat energy

• Wind turbines

• Movement -> electrical energy

• Hairdryer

• Chemical -> movement energy

• Rubbing hands

• Electrical -> light and sound energy

• Battery-powered toy

• Electrical -> heat and movement energy

• Swtiching on television

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Organize these living things into the right categories

Groups:

(a) Producers

,

(b) Herbivores

,

(c) Omnivores

,

(d) Carnivores

• Rabbit

• Bear

• Berries

• Eagle

• Cow

• Tiger

• Grass

• Rat

Put the living things in the right order to make a food chain.

• Grasshopper

• Snake

• Frog

• Hawk

• Grass