Science 5-Review

Silver is known as the best conductor of electricity but why don't we use it in industries and electricity transmission?

• it is costly

• it has effects in our environment

• it has effects in our Earth

• it is not recommended by the authorities

Why are cooking utensils made up of metal but the handles are made of wood?

• Metal is harder than wood

• Metal is expensive, but wood is cheaper

• Metal is not brittle while wood is brittle

• Metal is good conductor of heat while wood is poor conductor of heat

Why do electricians use rubber shoes & wear gloves during the installation of electrical connections?

• to protect themselves in the harmful effects of electricity

• they want to wear beautiful clothes and accessories

• to promote awareness

• it is recommended by the authorities

Kyrie wants to cook egg faster. Which of the following materials will she use?

• Aluminum pots

• plastic pot

• clay pot

• rubber pot

If the electricity continuously flows properly, what will happen to our appliances

• it will work

• it will malfunction

• it will not work

• it will experience short circuit

Which material can transmit the most light

• cardboard

• paper

• clear glass

• frosted glass

The best material that can be used in making an umbrella is an _________

• transmissions

• translucent

• transparent

• opaque

You have plants in your kitchen. They need lots of light. What type of windows should you have installed that will be the best for your indoor garden?

• No windows, just wall

• Translucent material

• transparent material

• opaque materials

The surface that can form a clear image of what is behind it is a _________

• ceramic plate

• clay sauce

• glass cup

• silver platter

Why does the roll of cotton appear white to your eye?

• The light is reflected back by the cotton to your eyes

• Light is absorbed by the cotton to your eyes

• Some light is absorb by the cotton

• Some light is reflected back by the cotton