PHYS 101 Quiz Physics of Matter

PHYS 101 Quiz: Physics of Matter

Module 4: Week 4

1. In the chemical formula for water, H2O, what does the “2” mean?
2. The buoyant force that keeps a ship afloat is an example of
3. If pressure inside a cylinder with a circular hatch is 2 atm and the radius of the entrance hatch is 12 inches, what force does the air exert on the hatch? Recall that the area of a circle is πr2
4. The molecule is the basic unit of all
5. When you suck through a straw, the force that makes the liquid go up the straw is
6. The central core inside an atom is
7. The absolute pressure is
8. When people get into a small boat it settles lower in the water and
9. You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.
10. A plasma state of matter is
11. The particle that orbits the central core inside an atom is
12. The pressure at the bottom of aquarium A is greater than that at the bottom of aquarium B. Why might this be?
13. Which of the following is not a unit of pressure?
14. You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.
15. The upward force exerted by a fluid on an object immersed in it is called
16. A helium balloon rises because of Archimedes’ principle.
17. You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.
18. Water is flowing through a pipe whose cross-sectional area at point A is larger than the cross-sectional area at point B. The reading on a pressure gauge connected to the pipe at point A will be lower than the reading on a pressure gauge connected to the pipe at point B.
19. When an object floats in a liquid, the buoyant force is larger than the weight of the object.
20. The uncharged particle inside an atom is a neutron.
21. A device that measures absolute air pressure is called a barometer.
22. Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.
23. Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.
24. In a flowing fluid, the pressure where the fluid is moving slower is higher than the pressure where the fluid is moving faster.
25. The brakes in a car work because of Pascal’s principle.
26. Select the closest matching pairs possible. Mass Density Archimedes Principle Bernoullis Principle Pressure Buoyant Force