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Science - Set Two

Terms in this set (53)

The sun appears bigger than other stars because of
the distance Earth is form the sun
The earth is getter hotter because
high levels of carbon dioxide trap the sun's radiation in the atmosphere
The Earth is getting hotter because
high levels of carbon dioxide trap the sun's radiation in the atmosphere
In a lunar eclipse, what is the order of Earth, the sun, and the moon
sun, Earth, moon
What causes Earth's magnetism?
the inner and outer core rotation
Tectonic plates slide against each other in opposite directions, causing a
earthquake
_____ happens when warmer, lighter air at the Equator moves toward the cooler air at the poles
convection currents
This event in history was pivotal in that it galvanized the U.S. space program and started what is known as the Space Race
launch of Russia's Sputnik
______ are formed when Earth's plates pull apart.
Divergent plate boundaries
Which of the following is the sphere where all living things are contained?
biosphere
During the Scientific Revolution, Copernicus introduced his theory that Earth revolves around the sun.
heliocentric
When the full moon starts to appear smaller as each night goes on, the moon is
waning
What part of Earth receives the most sunlight in a year?
the Equator
This theory suggest Earth's continents were all once one big landmass. Over time, the continents separated because of plate tectonics.
continental drift
The hotter a star is, the closer to this color it is.
blue
During this eon, the prokaryote life (the first form of life) emerged. The atmosphere is composed of volcanic and greenhouse gases.
Archean
The following gases are present in Earth's atmosphere from most present to least present
nitrogen, oxygen, argon, carbon dioxide
This type of rock is made from heat and pressure
metamorphic
As random genetic mutations occur within an organism's genetic code, the beneficial mutations are preserved because they aid survival. This is called
natural selection
The six different kingdoms are:
Plantae, Animalia, Fungi, Protista, Eubacteria, Archaebacteria
Ms. Jackson wants students to understand the diet of an owl. The best way for students to understand this is by:
dissecting an own pellet
Eukaryotic organisms are _____, and prokaryotic organisms are _____
multicellular, single-cellular
A byproduct of cellular respiration is:
carbon dioxide
In a 3rd grade class, students learn that the black moth that has a genetic make-up that makes it difficult for predators to see it against the dark trees. The white moth does not have the same genetic make-up and is easily seen by predators and eaten. The students are learning about:
natural selection
Select the correct order of the organization of living things:
cells-organs-tissues-organ systems-organisms
Ms. Demming wants to introduce her students to the structure of cells. What should be the most appropriate tool to use to enhance student learning of this concept?
microscopes so students can observe cells in onion skin
Mr. Parker is teaching students that cells divide to make more cells. What topic is Mr. Parker covering?
Cell theory
For a species to be in the same class, it must also be in the same _____.
phylum
What do plant cells have that animal cells do not?
cell wall and chloroplasts
This is the maximum population of a particular organism that a given environment can support without effects
carrying capacity
This type of cell division happens during sexual reproduction and ensures the offspring have the same number of chromosomes in each generation
meiosis
Prokaryotic cells reproduce by:
asexual reproduction
This is when one animal feeds on another, like a lion eating a zebra
predation
The brain and spinal cord make up this system
nervous
These are herbivores that eat the producers in a food web
primary consumers
This is a single-celled organism found everywhere that can be beneficial (like when it aids in digestion) and dangerous (like when it causes infection).
eukaryote
A cook leaves a metal spoon in the pot of hot water. When the cook grabs the spoon a few minutes later, the spoon burns the cook's hand. What process is happening
conduction
What would be the best way to demonstrate friction?
Roll a skateboard down the sidewalk and then on the grass to show the difference in speed

Have students rub their hands together rapidly to observe the heat produced
_____ are atoms that have lost or gained one or more _____
ions, elections
Which of the following is not a part of Newton's Laws of Motion?
opposite poles attract
These are made up of atoms that are held together by chemical bonds
molecules
On the periodic table, these are the columns
groups
This is considered a homogenous mixture
gel
This is the unit of measure for force and motion
newton
This characteristic of water allows it to have cohesion and adhesion
polarity
A teacher is showing students how to identify elements by looking at the number of protons each element has. What should the teacher emphasize?
atomic number
When salt is dissolved in water, it disappears. However, you can still taste the salt. This is called a
solution
What would be the best way to demonstrate the difference in speed of two cars on two different types of surfaces
bar graph
This part of an atom in a negatively charged particle that spins around the atom in a cloud
electron
Which of the following is most acidic?
vinegar
A 5th grade student is skeptical about a theory presented in class. What can the teacher do to help the student understand the validity of a theory?
Emphasize that for something to become a theory, it must be tested multiple times resulting in the same results.
Which of the following is a noble gas?
Helium
A student is testing different surfaces to see which one creates the most friction. The student is rolling model cars over the surfaces and timing each trial. What is the independent variable in this experiment?
different surfaces
Verified questions
chemistry
If a single $5 \mathrm{~g}$ block of $\mathrm{NaCl}$ is placed in water, it dissolves slowly, but if $5 \mathrm{~g}$ of powdered $\mathrm{NaCl}$ is placed in water, it dissolves rapidly. Explain.
Verified answer
chemistry
A hexose was obtained after (+)-glyceraldehyde underwent three successive Kiliani–Fischer syntheses. Identify the hexose from the following experimental information: oxidation with nitric acid forms an optically active aldaric acid; a Wohl degradation followed by oxidation with nitric acid forms an optically inactive aldaric acid; and a second Wohl degradation forms erythrose.
Verified answer
physics
You want to view an insect $2.00 \mathrm{~mm}$ in length through a magnifier. If the insect is to be at the focal point of the magnifier, what focal length will give the image of the insect an angular size of $0.025$ radian?
Verified answer
engineering
Solve the given ODE. Show the details of your work. $$ (D^5+8D^3+16D)y=0 $$
Verified answer