PC 4 Science 4

Light travels in a ________ line.

         

 

• A. curve    

• B. zigzag

• C. horizontal  

• D. straight

What is our main source of light?

         

• A. moon

•   B. mars

• C. comets

• D. sun

Which of the following materials only allow some light to pass through them?

        

•  A. transparent  

• B. translucent

• C. clear

• D. opaque

Which of the following DOES NOT belong to the group?

         

• A. wood   

•   B. metal        

• C. cardboard

• D. glass

The material that allows light to pass through them is _______.

         

• A. transparent  

• B. translucent

• C. dark  

•   D. opaque

Which of the following material is a heat conductor?

         

•    A. metal        

• B. wood  

•   C. rubber  

• D. air

Which of the following DOES NOT belong to the group?

       

• A. plastic bottle

• B. metal spoon

•   C. rubber band    

• D. balloon

Which of these materials is a good conductor of electricity?

        

• A. Rubber

• B. Glass      

• C. Metal  

• D. Wood

The electrician wears rubber gloves for protection. The purpose of the rubber gloves is to:

• A. Keep the electrician dry

• B. Create an electrical circuit

• C. Produce electricity

• D. Insulate the electrician

What material would be safest to use as an insulator to cover electrical wires?

• A. Aluminum  

• B. Tin    

• C. Rubber    

• D. Water