Science Olympiad

An estuary is an area where-

• there is only fresh water

• there is only salt water

• pond water and river water mix

• fresh water and salt water mix

The main difference between ocean water and lake water is that ocean water contains

• oxygen

• salt

• algae

• plants

As you go deeper in the ocean, the _______ decreases. 

• water

• salinity

• temperature

• water pressure 

What do the arrows represent in the picture?

• waves

• currents

• tides

Tags

NGSS.MS-ESS2-6

The Gulf Stream is 

• a stream behind the school 

• a current in the Atlantic Ocean that flows on the eastern coast of North America 

• a boat 

• part of the ocean floor 

Tags

NGSS.MS-ESS2-6

Why is there high salinity in the Mediterranean Ocean?

• precipitation

• evaporation

• volcanoes

• deposition

A trench is formed at what zone?

• subduction

• divergent

• convergent

• strike-slip

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The ray that bounces off the mirror.

• Angle of Reflection

• Incidience Ray

• Reflected Ray

• Angle of Reflection

Tags

NGSS.MS-PS4-2

The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-

• absorbed

• stopped

• reflected

• refracted

Tags

NGSS.MS-PS4-2

The angle of incidence is equal to the angle of reflection

• Law of Reflection

• Law of Light

• Incidence Ray

• The Normal