Tidal waves and Tsunamis
A Tidal wave is the periodic rise and fall of sea level.it is caused by the gravitional forces acting between the sun,moon,and the earth.
Tsunami is Japanese word meaning 'harrbour wave'
Tsunami are massive ocean waves caused by undersea earthquakes,volcanic,eruption,and landslides.* 
In a tsunami,large amounts of water move at a great speed and as the waves reach the land,they swell up into gigantic waves.the water level at sea,as seen from land appears to rise considerably.
if u like my post please.
follow,upvote,resteem.
Upvote
Thanks for upvote me
up vote
Thanks for upvote
Thanks for upvote
Congratulations! This post has been upvoted from the communal account, @minnowsupport, by ritu from the Minnow Support Project. It's a witness project run by aggroed, ausbitbank, teamsteem, theprophet0, and someguy123. The goal is to help Steemit grow by supporting Minnows and creating a social network. Please find us in the Peace, Abundance, and Liberty Network (PALnet) Discord Channel. It's a completely public and open space to all members of the Steemit community who voluntarily choose to be there.
If you like what we're doing please upvote this comment so we can continue to build the community account that's supporting all members.
meep