A material that reflects or absorbs all of the light that strikes it is a(n) called __________________.
What is an opaque material.
100
_____________________ forms when rays actually meet.
Real images
100
What might happen to an organism if its habitat could not meet one of its needs?
It might die.
100
_____________________is the number of individuals in a specific area.
Population density
100
The primary colors of pigments combine in equal amounts to form what color?
Black
200
When light bounces off an uneven surface, the result is called _____________________.
diffuse reflection
200
Where does an image in a plane mirror appear to be located?
Behind the mirror
200
A prairie dog, a hawk, and a badger all are members of the same ________________.
community
community
200
Which of the following is not a limiting factor for population:
A. ground floor
B. food
C. water
D. space
A. ground floor
200
Describe what happens to light that strikes aluminum foil?
Light that strikes aluminum foil is mostly reflected and partly absorbed.
300
A curved piece of glass or other transparent material that is used to refract light is a _____________________.
lens
300
An actor’s red shirt and blue pants both appear black. What color can you infer that the stage light shining on the actor is?
green
300
All of the following are examples of limiting factors for populations except:
A. space
B. food
C. time
D. weather
C. time
C. time
300
Which of the following is the best reason for having a territory?
a. You can have your own space
b. Do not have to worry about your neighbors
c. It reduces competition
d. Reduces food supply
C. It reduces competition
300
How does the result of mixing the primary colors of pigments compare to the result of mixing the primary colors of light?
The primary colors of light are red, blue, and green. The primary colors of pigments are cyan, yellow, and magenta.
400
A rainbow forms when sunlight is refracted and reflected by tiny water droplets. What is the order of colors in a rainbow?
red, orange, yellow, green, blue, and violet
400
The three colors that can be used to make any other color are called?
Primary colors
400
In which type of interaction do both species benefit?
mutualism
400
Which is not a method of determining population size?
A. Direct observation
B. Immigration
C. Sampling
D. Indirect observation
B. Immigration
400
What is one weather condition that can limit the growth of a population?
A cold snap in late spring, a hurricane, or a flood.
500
Describe the shapes of a concave lens and a convex lens.
Convex lens is thicker in the middle, and a concave lens is thicker at the edges.
500
Any two primary colors combined in equal amounts produce a?
Secondary color
500
The series of predictable changes that occur in a community over time is called _____________.
succession
500
What is an example of where convex mirrors are typically used?
Passenger-side mirrors in cars
500
How does a straw seen through transparent glass compare with a straw seen through translucent glass?
A straw can be seen clearly through transparent glass. Through translucent glass, it can be seen only as a shape without details.