Earth's Place in Universe
Creates a sand dune
What is deposition?
Why does carbon dioxide decrease in the container when plants in water are placed in sun?
The plant makes photosynthesis in the sun and produces oxygen in water.
Oil is nonrenewable because____
Forms over thousands of years
Water freezes in cracks
frost wedging or mechanical weathering
rock formation in desert
Type of wind erosion. Wind carried it away.
Model requires: renewable energy, works day and night, costs $7. model cost less than $15/model uses renewable energy/model only works during the day
Does not meet expectations because it only works during the day
A person brings chopped wood for a fire in the forest. The insects from the wood overtake the environment. What is it called?
invasive species
Why do people use computers instead of maps?
Changes on roads are put on maps faster.
Roots grow between cracks in sidewalk
Tree root wedging
Source supplies the energy that green plants need for photosynthesis
sunlight
Decomposers obtain energy from what?
Other organisms
Wild cattle move to a new area during a drought. What will be a characteristic of new area?
Deep ocean trenches, volcanoes, island arc, submarine mountain ranges and fault lines are features that form where?
salt crystals wear away rocks
abrasion
Herbivore is added to food web. What will be its role?
Feed on grasses and provide nutrients for other organisms
Why does the shadow length changes in one day?
Earth is rotating on its axis.
Likeness in food chain and food web
Both show movement of energy
Major bands of earthquakes and volcanoes meet where?
Where moutains meet oceans
Carrying away soil, rocks, or sediments
erosion
Why would a hawk be placed at end of food chain?
Gains energy from consumers.
Why does Earth experience night?
Earth spins on its axis.
A coral population decreases. What three events will happen as the coral population decreases?
# of ocean organisms near corals will decrease, less food available and stability in ecosystem
What determines physical state of each layer of Earth?
Heat and pressure
four layers of the earth, thicknesses, composition
Crust 5- 70 km rocks, sediments
mantle 2900 km solid rock to a almost melted rock
outer core 2300 km mostly of liquid iron
inner core 1216 km solid iron
A cat is a consumer. Why?
Cat receives energy from eating other organisms.