Physics
When Sara ran a race on a straight track, her speed changed from 3 m/s to 6 m/s over a time period of 3 seconds. What was her acceleration during that time?
1 m/s2
In what type of intramolecular bond do the atoms share one or more electrons?
Covalent bond
The spontaneous decay of unstable atomic nuclei is called ___________
Radioactivity (or Radioactive Decay)
When wastage is greater than accumulation in a glacier, the glacier ___________
W) moves forward
X) retreats
Y) stays in place
Z) breaks
X) retreats
Your grades on your first 3 math tests are 80%, 83% and 90%. What do you need to score on the next test in order to average 87% on the 4 tests?
95%
Cody has a mass of 50 kilograms. What is his weight on Earth? (assume that acceleration due to gravity is 10 m/s2)
500 N
How many valence electrons does carbon-12 have?
4
What is the maximum number of valence electrons for a full valence shell?
8
What type of flow is demonstrated in a glacier when it is under immense pressure and behaves as a plastic material that flows without fracturing?
Plastic Flow
Evaluate the following and give your answer as a proper fraction in lowest terms: 3/16+5/8–1/4
9/16
If you push a 20-kilogram mass with a force of 40 N, what will be the object’s acceleration?
2 m/s2
What property of water allows water to stick to each other and produce surface tension?
Cohesion
What two subatomic particles make up a neutron?
A proton and an electron
What is it called when pieces of ice break off a glacier to form icebergs, usually in regions where the glacier meets a sea or a lake?
Calving
The first row in a theater contains 8 seats. Each row contains 2 seats more than the one in front of it. How many total people can sit in the first 6 rows?
78
What is the momentum of a 9-kilogram object that has a velocity of 3 m/s?
27 kg*m/s
What organelle digests and breaks down the old organelles that are no longer useful to the cell?
Lysosome
What subatomic particles make up an alpha particle?
2 protons, 2 neutrons
Before the glacier, valleys are ___ shaped, but glaciers widen and deepen them into a ___ shaped glacial trough
(Hint: they are letters)
V, U
What is the length of the hypotenuse in a right triangle with legs of length 7 and 24?
25
50 J
This type of dipole-dipole bond can form between hydrogen and oxygen, fluorine, or other elements with high electronegativity. It also acts to stabilize proteins in their secondary structure
Hydrogen bond
In an atom that undergoes beta decay,
1) What is the change in the mass number?
2) What is the change in the atomic number?
1) stays the same
2) increases by 1
What isotope is used to date very recent events in geologic history, with a half life of 5730 years?
Carbon-14
The endpoints of the diameter of a semicircle are represented by the coordinates (0, a) and (0, -a). If the area of the semicircle is 32π, what is the value of a?
8