Category 1 Stems

Students collected data on the appearance of four substances and how they reacted when mixed with water. Which substances dissolved when mixed with water?

• A and B

• A and C

• B and C

• C and D

The diagram below shows two identical containers and their ingredients.

Which diagram shows what will happen if the two containers are combined?

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Students said that they had these items at their homes. Their teacher asked them to identify how electrical energy is transformed in each of their household items.

Groups:

(a) Examples of Mechanical Energy

,

(b) Electrical to Radiant

,

(c) Electrical to Thermal

,

(d) Electrical to Mechanical

• lightbulb

• riding a bike

• pushing a lawnmower

• stove

• Television

• blender

Students were observing how two different solar panels transform energy. Use the diagrams answer the question.

Identify which solar panel system would be used for each activity.

Groups:

(a) Panel X System

,

(b) Panel Y System

• turning on the microwave

• turning on the heater to warm the house

• using hot water to wash your hands

• Taking a hot water bath

Organize these options into the right categories

Groups:

(a) Conductors

,

(b) Insulators

,

(c) Semiconductor

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Label the parts of the wave to complete the diagram.

a

b

c

d

trough

amplitude

crest

wavelength

A student made a makeshift guitar out of rubber-band and a box. Match the correct type of pitch with each instrument.

c

b

a

medium pitch

lowest pitch

highest pitch

Sort each object under the correct heading. Use the diagram to help you sort each item.

Groups:

(a) Translucent

,

(b) Opaque

,

(c) Transparent

• 2

• 3

• 1

Drag each item under the correct example of each vocabulary word.

Light can.....

Groups:

(a) Reflect

,

(b) Refract

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A Solar stop light is sometimes used in rural areas. An example of a solar stop light is shown.

Correctly show the process of how energy is transformed in the stop light.

• Solar panels take in the solar energy.

• First

• Solar energy turns to electrical energy.

• Finally

• Electrical energy to radiant energy

• Next