Energy 4º

How many types of energy are there?​ ​ (a)   ​

• six

• five

• two

• ten

• I don't now

Surround in blue light energy and of green mechanical energy.

What is the fastest form of energy

Where light cannot travel?

• by opaque materials

• by my hand

• by translucent materials

• by transparent materials such as glass

What is the word that does not fit here?

• Sound energy

• food

• light energy

• chemical energy

Refraction is when Light passes from one substance to another and it changes direction and no speed.

• 
• 

When there is a cold substance?

A substance is hot when...

• I don't know

• Its particles move slowly

• is of thermal energy

• its particles move very fast

Light can travel at 300,000 kilometers per second.

• YES

• NO