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Wave Charateristics
Wave Behavior
Biochemical Reactions
Fossil Records and History of Life
Potluck
100
the number of complete wavelengths that pass a point in a unit of time
What is Frequency
100
the bouncing of light off of a surface
What is reflection
100
Where do cells get the chemicals needed to synthesize other molecules?
What is from the food they take in
100
the permanent loss of a species
What is extenction
100
Derick plays the trombone in band class, and he can hit a perfect "A note," according to his teacher. Derick can hit an "A note" by blowing very soft, or by blowing very hard. By changing how hard he blows into the trombone, Derick is changing how loud the note is. Which property of waves is he changing when he changes how loud the "A note" is?
What is amplitude
200
the highest point of a transverse wave
What is the crest
200
True or False: Shiny surfaces, such as mirrors, typically transmit light well.
What is False True Statement: Shiny surfaces, such as mirrors, typically reflect light well.
200
Where does an eagle get the energy it needs to grow and to fly?
What is from the animals it eats
200
The presence of homologous structures in two distinct species suggests that the species share a _______.
What is common ancestor
200
Wireless Internet networks, including many used in homes, often make use of high-frequency radio waves. High-frequency waves are useful because they can carry a lot of information. However, high-frequency waves are less capable of passing through objects than are low-frequency waves. As a result, waves traveling from a person's wireless laptop computer, for example, could be interrupted by objects between the computer and the modem. Due to this limitation of high frequency waves, which of the following statements best explains why digital waves are commonly used in high-frequency wireless networks instead of analog waves?
What is It is easier to correct small disruptions in digital waves than in analog waves.
300
a moving disturbance that transfers energy through matter or space
What is wave
300
a moving disturbance that transfers energy through matter or space
What is a wave
300
6. Sugar molecules can be oxidized in the cells of animals. This oxidation releases energy for the animal to use. From what source do the cells get these molecules?
What is food
300
Older fossils are found _______ newer ones in sedimentary rocks.
What is under/beneath
300
A scientist took a sample of enzymes from cow saliva and mixed them with a form of starch found in grains. After a while the starch broke into many smaller molecules. This shows that
What is cows break down the food that they eat
400
the magnitude of the displacement or change due to a wave
What is amplitude
400
the change of a wave's direction as it passes from one medium into another in which it has a different speed
What is refraction (also called bending)
400
A hawk swoops down and catches a squirrel. The squirrel provides energy for the hawk. What happens to the rest of the matter?
What is the matter is converted to other carbon molecules
400
the study of structural differences and similarities in living things
What is comparative anatomy
400
Fossils are remains of organisms found in sedimentary rock. These remains are found in thousands of rock layers around the world and provide evidence for Earth's long history of changing lifeforms. Rock layers that formed more recently
What is contain fossils that resemble existing species more closely than do fossils found in older rock layers.
500
True or False: The greater a wave's amplitude, the less energy it transmits.
What is False True Statement: The greater a wave's amplitude, the more energy it transmits.
500
Any light that is not reflected or absorbed by a medium is _______, or passed through it.
What is transmitted
500
Before the cells in a person's body can use the food that the person eats, the food must be
What is chemically broken down into sugar
500
the study of similarities and differences in embryologic development among species
What is comparative embryology
500
Fossils are most commonly found in _______ rock.
What is sedimentary