What are natural phenomena?

Mark all the elements of nature.

• water

• wind

• fire

• earth

• human beings

The elements of nature can form ​ (a)   without the help of ​ (b)   .

• natural phenomena
• human beings
• unnatural phenomena

Natural phenomena can quickly change the place we live in.

• True

• False

This occurs June to November

• hurricane season

• earthquake season

This is the season when thunderstoms are most frequent in Puerto Rico.

• spring

• summer

Natural phenomena can also change the environment over many year.

• True

• False

Rain and waves can ​ (a)   the coasts and gradually change their ​ (b)   .​

• erode
• shape
• phenomena

There is no earthquake season.

• True

• False

Order the steps of thunderstorm formation.

• Hot air rises form the ground.

• A big cloud is formed.

• The particles create electricity.

• We see the lightning and hear the thunder.

Order the steps of thunderstorm formation.

• Particles crash into each other, which causes electricity.

• Hot, humid air rises from the ground.

• Large clouds filled with ice and water particles form.

• Thunder and lightning occur.