Ecosystems
What is carrying capacity?
a. How many items you can carry from one end of a habitat to another
b. How many predators are in the habitat
c. The abiotic factors of an ecosystem
d. The number of organisms a habitat can support
D. The number of organisms a habitat can support
What is climate?
a. The condition of the atmosphere at a particular time
b. The long-term atmospheric patterns of a particular place or region
c. The amount of precipitation that falls
B. The long-term atmospheric patterns of a particular place or region
What is the mechanism that allows us to see light from the moon?
a. Reflected light
b. Refracted light
c. The moon’s own light
d. Light from the Earth
A. Reflected light
Molecules are made of
a. Cells
b. Waves
c. Different proportions and quantities of atoms
d. Different proportions and quantities of compounds
C. Different proportions and quantities of atoms
Solid particles are
a. Loosely bonded and flowing
b. Tightly packed
c. Free to fly around
d. Very hot
B. Tightly packed
Humans have bacteria that live in our stomach and intestines. These bacteria are adapted to survive in this environment and have difficulty surviving elsewhere. The bacteria help humans to digest food. This is an example of which interaction?
a. Herbivory
b. Competition
c. Mutualism
d. Parasitism
C. Mutualism
Uneven heating of Earth by the Sun causes
a. precipitation
b. earthquakes
c. solar flares
d. wind
D. wind
In order to see the phases of the moon, what space objects play a role?
a. Asteroids
b. Stars and comets
c. Earth, Sun, and moon
d. Planets of the solar system
C. Earth, Sun, and moon
What is the substance created by a chemical reaction called?
a. reactant
b. product
c. resultant
d. summation
B. product
Particles move the slowest in what phases?
a. Solid
b. Liquid
c. Gas
A. Solid
Why are decomposers important to an ecosystem?
a. They help ensure the prey population does not get too large
b. They break down dead and decaying animal and plant matter and return nutrients to the soil
c. They make the apex predators stronger
d. They can produce their own food using sunlight
B. They break down dead and decaying animal and plant matter and return nutrients to the soil
Which statement is true about the way Earth’s materials heat?
a. Water heats quickly and cools quickly
b. Land heats slowly, but water heats more quickly
c. Land heats quickly and cools quickly
d. Water and land heat at the same rate and cool at the same rate
C. Land heats quickly and cools quickly
Which statement below best describes the side of the moon that is facing the Sun?
a. Never bright
b. Sometimes bright
c. It is usually dark
d. Always bright
D. Always bright
Which theory describes the arrangement and movement of particles in solids, liquids, and gases?
a. Theory of relativity
b. Kinetic theory
c. Atomic theory
B. Kinetic theory
Which theory describes the arrangement and movement of particles in solids, liquids and gases?
a. Theory or relativity
b. Kinetic theory
c. Atomic theory
B. Kinetic theory
In the foothills of the mountains, many new houses are being built. How does this affect the organisms who were already living there? Choose the answer that is most likely.
a. It would have no effect on organisms already living there
b. There are no organisms living there
c. The organisms living there would lose some of their space and habitat
d. The organisms would find a way to adapt and live in the same habitat that the houses are now sitting on
C. The organisms living there would lose some of their space and habitat
What is the primary reason that air above the equator is heated more than at other places on Earth?
a. The equator receives the most sunlight due to the shape of the Earth
b. The tilt of the Earth on its Axis causes more sunlight to reach the Equator
c. There is more water around the equator than anywhere else on Earth
d. The sunlight coming at the equator hits at an angle
A. The equator receives the most sunlight due to the shape of the Earth
The new moon is followed by which major lunar phase?
a. Waning crescent
b. Waxing crescent
c. Waning gibbous
d. Waxing gibbous
B. Waxing crescent
The Law of Conservation of Mass means
a. Mass = chemical reaction + 5
b. Total number of atoms does not change after a chemical reaction, and because of this, mass is conserved
c. Structure of molecules stays the same between reactants and products in a chemical reaction
d. Mass changes after a chemical reaction
B. Total number of atoms does not change after a chemical reaction, and because of this, mass is conserved
In which state of matter do the particles have the most energy?
a. Solid
b. Liquid
c. Gas
C. Gas
California boaters are encouraged to clean and dry their boats and check them for zebra mussels after each use. Zebra mussels clog water intake pipes and destroy native populations of mussels. Is this a good suggestion?
a. No, they really should stop boating altogether
b. Yes, zebra mussels are invasive, and we want to stop them from spreading
c. No, because zebra mussels are interesting
d. I am sure zebra mussels are not that bad and we should not make that big a deal out of it
B. Yes, zebra mussels are invasive, and we want to stop them from spreading
What are some of the factors that cause uneven heating of the Earth’s surface?
a. The distance the Earth is from the Sun and distance from other planets
b. The phases of the moon and the distance from the moon
c. The shape of the Earth and Earth’s two main materials, land and water heat differently
d. Different populations of organisms in different parts of the world
C. The shape of the Earth and Earth’s two main materials, land and water heat differently
As the moon orbits around Earth
a. Different parts of it appear to be illuminated by the Sun
b. The moon shines its light in other directions
c. This causes day and night
d. The moon always appears the same
A. Different parts of it appear to be illuminated by the Sun
If you were designing a hot pack, which reaction would you want to have?
a. Combustion reaction
b. Precipitate reaction
c. Endothermic reaction
d. Exothermic reaction
D. Exothermic reaction
Why can liquids not be compressed easily?
a. The particles are in a random arrangement
b. The particles are closely packed
c. The particles are free to move over each other
C. The particles are free to move over each other