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When light passes from water into air the light bends away from the normal true or false?
False. When light passes from water into air, it bends towards the normal.
Is salt water is denser than fresh water true or false?
True. Salt water is denser than fresh water because the presence of dissolved salts increases the mass of the water, making it more dense.
True or false: energy from moving water can be converted into electricity?
True. Moving water, such as in rivers, can be used to turn turbines, which then generate electricity in a process known as hydroelectric power generation.
True or false the difference between water freezing and water boiling in the Fahrenheit scale is 100?
True. The difference between the freezing point (32°F) and boiling point (212°F) of water in the Fahrenheit scale is 180°F.
When an object floats on water there is no gravity acting on it is that true or false?
False. Gravity is always acting on an object, but when an object floats on water, the buoyant force provided by the water is equal to the gravitational force acting on the object, causing it to float rather than sink.
True or false When frozen water melts it is undergoing a physical change?
Actually it is undergoing a crappy change.
Is it true or false that when solid melts it turns into gas?
both. It depends what substance it is. For example: solid water (ice) melts into liquid water (water) and then that melts into gas water (water vapour). Another example is that frozen carbon dioxide (c02)which is a solid also known as dry ice, melts into c02 gas hence the name dry ice because when it melts it goes straight into a gas state.
True or false dry ice is icefrom which all water has been removed?
False - dry ice does not contain water; it is frozen carbon dioxide
Film can easily be frozen in time and space for analysis true or false?
False
Does a wet rock generally melts at a lower temperature than a dry rock true or false?
True. A wet rock generally melts at a lower temperature than a dry rock because the presence of water in the rock lowers its melting point due to the water acting as a flux, reducing the energy required for melting.
Water works to expand joints in rocks because it expands as it evaporates true or false?
No. Water expands when it freezes, causing the rocks to crack and break.
When water freezes it contracts true or false?
It is false. Water expands on freezing.
Water is recycled in nature over and over?
true
A wet rock generally melts at a lower temperature than a dry rock true or false?
True. Water has a lower melting point than most rocks, so when a rock is wet, the presence of water can lower the overall melting point of the rock.
Frozen rain is snow is true or false?
True. Frozen rain and snow are both formed from frozen water droplets, although they have distinct formation processes. Frozen rain, also known as sleet, occurs when raindrops freeze before reaching the ground. Snow forms when water vapor in the atmosphere freezes directly into ice crystals.
Is this true of false that the temperature of a cup of tea is about -3 degrees C?
False: since tea is mostly water, if its temperature was -3 degrees C is would be frozen solid and you could not drink it.
True or false mammals can live in salt water?
true
