Atoms and the Periodic Table
What part of the atom is negatively charged?
electron
At what position does the pendulum have the most potential energy? (see diagram)
1
As their environment slowly changes, organisms with certain traits are more likely to survive and produce offspring with those same traits. This statement describes
A cell division
B genetic engineering
C resource conservation
D natural selection
D natural selection
Taylor wanted to see if eating apples would help her do better on her classwork. The first day, she didn’t eat any apples. On day 2, she ate one apple; on day 3, she ate 2 apples; and on day 4, she ate 3 apples. Each day, she recorded the grades she got on her science work.
What is the independent variable?
Amount of apples eaten
About how long does it take the Moon to revolve once around Earth?
A a day
B a week
C a month
D a year
c. a month
What positive subatomic particle is unique and defining to every atom?
proton (atomic number)
Describe the net force acting on the x.
10N--> X <--15N
Unbalanced
At the end of the 10-year period, which color of rabbit appears to be best adapted to its environment? (SEE Graphs)
(1) white
(2) tan
(3) gray
(4) black
(3) gray
Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One group used calculators and the other group computed without calculators.
What is a controlled variable of this experiment?
Vary - type of problems, student ability level
Gravity is the major force that
A keeps planets in their orbits
B affects melting of a solid
C keeps sunlight in Earth’s atmosphere
D affects evaporation of water from oceans
A keeps planets in their orbits
What do we call HCO in the chemical reaction below?
HCO -> H + CO
Reactant
A scientist was studying cockroach movement through a small passage. The scientist attached sandpaper to the inside surfaces of the passage. Which variable was the scientist most likely trying to investigate?
A. weight
B. friction
C. temperature
D. energy transfer
B. Friction
The significant differences between dogs were caused by humans. These differences are best explained by the process of
A biological adaptation
B selective breeding
C metamorphosis
D regulation
B selective breeding
Michael wanted to see what kitchen cleaner worked best for cleaning her counters. He used Lysol, Clorox, Pinesol, and just water. For each cleaner, he put 5 milliliters of grape juice on the counter, sprayed the cleaner, and wiped it with one paper towel.
What is a controlled variable mentioned above?
1 paper towel
In order to perform photosynthesis, a leaf must absorb sunlight and take in
A carbon dioxide
B nitrogen
C oxygen
D methane
A carbon dioxide
Label the following diagrams as elements, compounds, and/or mixtures. (see board)
vary
Will a 3g ping pong ball or a 46g golf ball be harder to start and stop moving? Explain. Hint: Think about Newton’s first and second laws.
46g golf ball will be more difficult to stop because it has a larger mass and will require more force to stop.
Base your answer to the question on your knowledge of science. If a Punnett square shows the possible offspring of a cross between a green pea plant (GG) and a yellow pea plant (gg).
What percentage of the offspring will be green pea plants?
100%
Michael wanted to see what kitchen cleaner worked best for cleaning her counters. He used Lysol, Clorox, Pinesol, and just water. For each cleaner, he put 5 milliliters of grape juice on the counter, sprayed the cleaner, and wiped it with one paper towel.
What is the independent variable?
Cleaner
Studying the beak of each of these birds would best help a scientist understand
A how the birds fly
B where the birds live
C what the birds eat
D if the birds migrate
C what the birds eat
All atoms in the same _ will have similar characteristics.
Column (group)
A flat line on a distance/time graph shows us what type of motion?
a. increase in speed
b. decrease in speed
c. steady speed higher than 0
d. at rest
d. at rest
Identify the genotypes of 2 parents who express the dominant trait but have an offspring that expresses the recessive trait.
Gg x Gg
An experiment was performed to determine how the amount of coffee grounds could affect the taste of coffee. The same kind of coffee, the same percolator, the same amount and type of water, the same perking time, and the same electrical sources were used.
What is the independent variable and dependent variable?
IV: Amount of grounds
DV: Taste of coffee
Which relationship would a scientist most likely model using calculations based on the law of universal gravitation?
A. the motion of planets within the solar system
B. the internal structure and position of the Moon
C. factors that affect Earth’s atmosphere and climate
D. natural events that change the shape of Earth’s surface
A. the motion of planets within the solar system