The many overlapping food chains in an ecosystem make up a ____________________________.
Food Web
100
How many arms does a squid have? What is their purpose?
8, to hold onto prey
100
The life cycle of a star is determined by its __________.
mass (initial size)
100
The youngest rocks are found where on the ocean floor?
In the middle of the mid-ocean ridge
100
What two phases of the lunar cycle come after the new moon?
waxing crescent, 1st quarter
200
The place an organism lives that provides the things the organism needs is called its ________________________.
Habitat
200
How do squid move through the water? Which organ helps them do this?
jet propulsion, expel water through the siphon
200
About 90% of the stars in space are ____________________ stars.
main sequence
200
What is the cause for the convection currents?
Uneven heating of magma by the Earth's core
200
Describe the position of the Earth Moon and Sun during a lunar eclipse.
Sun - Earth - Moon
300
The behaviors and physical characteristics of species that allow them to live successfully in their environment are called ________________________.
adaptations
300
What is the purpose of the squid's sharp beak?
to tear meat and eat
300
The complete range of electromagnetic waves is called ___________________________.
electromagnetic spectrum
300
What is the idea called that said the continents have moved over time?
continental drift
300
What causes tides on Earth?
The gravity of the Moon on Earth's water and that Earth rotates.
400
Organisms that can make their own food are called ____________ or ___________ and two examples are ___________ and ____________.
Producers or Autotrophs
Trees and grasses
400
What is the purpose of the tentacles? How many are there?
To grab prey, 2 tentacles
400
What is the difference between a red and blue shift in the electromagnetic spectrum?
red shift - object is moving away
blue shift - object is moving towards
400
What forms as a result of seafloor spreading?
Mid Ocean Ridge
400
We see different phases of the moon at different times during the month. What causes this?
The position of the moon revolving around the Earth and the amount of light we can perceive shining on it.
500
What does a food chain show about the flow of energy?
That energy is passed from producers to herbivores to carnivores; only 10% of energy gets passed.
500
What is the purpose of the chromatophores?
Change color for camouflage
500
On an HR diagram, the magnitude (increases or decreases) moving up the y-axis, while the temperature (increases or decreases) moving left to right, across the x-axis.
increases, decreases
500
What forms when two ocean plates collide?
A trench in the ocean and volcanic island arcs in the ocean
500
What is the maximum number of tides that occur in a day?