Dirt & Rocks
A mixture of (decomposed) plants and animals and small bits of rock makes __________________?
Soil or dirt
Will something float easier in freshwater or saltwater, and why?
Salt water - because salt water is heavier, so something has to be heavier to displace an equal weight of salt water than in fresh water
The type of rock that is formed when either sedimentary or igneous rock is changed by lots of heat or pressure.
Metamorphic
In a seed, what are the cotyledons for?
Food for the plant
What 2 things are made in photosynthesis?
Glucose and oxygen
When something dies, and rots away into very small pieces that no longer look like the original thing, it is called _________________________.
Decomposing
What freezes at a higher temperature, fresh water or salt water? Why?
Fresh water, because the ocean is saltwater. Any solution that has something dissolved in it freezes at a lower temperature.
"Opposite events happening at the same speed" refers to _____________________________.
Equilibrium
The process by which a seed develops into a plant is called ______________________.
Germination
Stomata
The small parts of decomposed plants in the soil are called _______________________.
What are ice bergs made of? Fresh water or salt? Describe how they form and why they float.
Fresh water - Rain falls on mountains and forms glaciers, glaciers slide down the mountain and into the ocean as chunks of ice. They float because they are made of fresh water, and fresh water weighs less than salt water
The type of rock made from cooling lava.
Igneous
What is the testa, and what has to happen to it before germination can occur?
The seed coat; it has to come off
Water in a leaf evaporating into the air is called?
Transpiration
When water washes away soil or wears away parts of rock is it called _________________.
Why does salt "melt" ice?
It dissolves in the liquid part of the ice, lowering its freezing point, and preventing it from refreezing.
An educated guess about what will happen is called a _______________. Give an example
Hypothesis
What is the function of the plant's roots (2), stem (1), and leaves (1)?
Absorbs water and attaches plant to soil; carries water to leaves; absorb sun to make energy
The pigment in plant leaves that gives it its green color is called?
Chlorohpyll
When small bits of rock (sediments) stick together to make a hard substance, it is called ___________________ rock.
Sedimentary
Give examples of 2 natural sources of freshwater and 1 of saltwater. Which can we drink?
Rivers & lakes; ocean; freshwater
If the result of an experiment is what you would expect it to be, you say it is ________________. If it is not what you would expect, it is _________-__________.
intuitive; counter-intuitive
What 3 things does a plant need to make energy, and what is that process called?
Water, light, and air; photosynthesis
Describe the process of photosynthesis
Plant takes in light from the leaves, air from the stomata, and water from the roots. It converts this into glucose (energy molecule) and oxygen.