Intuitor

Basic Physics Savvy Quiz — Score

Your Total Score is 47.5 %



Energy Basics

1) Temperature is the same thing as heat.
Your Answer: false View Explanation
2) Force is a form of energy.
Your Answer: false View Explanation
3) When touching an object, the sensation of hot and cold is a measure of object's overall temperature.
Your Answer: false View Explanation
4) Running a ceiling fan in an enclosed room during the summer will slowly raise the roomís temperature (assuming no heat transfer in or out).
Your Answer: true View Explanation
5) When a person uses a simple machine, such as a lever or a pulley, the work or energy output from the simple machine can never be higher than the work or energy input by the person using the simple machine (neglect any potential energy that may have been previously stored in the machine).
Your Answer: true View Explanation
6) If there were no energy losses due to friction or unwanted heat transfer, an internal combustion engine could be built for an automobile which would be capable of converting 100% of the combustion energy in gasoline into energy used for moving the car. (Assume 100% of the fuel is burned during combustion.)
X Your Answer: true View Explanation
7) To produce heat, the Sun burns hydrogen in a combustion reaction.
Your Answer: false View Explanation
8) Energy is the ability to do work. In other words, if Ben needed 1000 joules of energy to move a box 5 meters across the floor it would make no difference whether he had 1000 joules of thermal energy or the same amount of mechanical energy. He could still do the work required to get the job done.
Your Answer: false View Explanation

Gravity

9) If a feather and hammer are dropped on the Moon at the same time from the same height they will hit the Moonís surface at virtually the same time.
Your Answer: true View Explanation
10) The Moon has no gravity.
Your Answer: false View Explanation
11) Mass and weight have essentially the same meaning. To increase the weight of an object requires an increase in the mass of the object.
X Your Answer: true View Explanation
12) Susan jumps off a chair. As she is falling, the Earthís gravitational force on her is higher than her gravitational force on the Earth.
Your Answer: false View Explanation
13) An astronaut orbits the Earth 500 miles above its surface. She appears to be weightless because there is virtually no gravitational force on her.
Your Answer: false View Explanation
14) When a person on Earth stands on a floor, of the two external forces acting on her, her perception or sensation of weight directly depends on the upward force the floor exerts on her feet, not the downward force of gravity.
Your Answer: true View Explanation

Basic Kinematics

15) When an object has negative acceleration, the object has to be slowing down.
Your Answer: false View Explanation
16) Juan drives around a corner at constant speed. His car accelerates.
Your Answer: true View Explanation
17) Shanda drives around a circular track exactly 12 times in 2 hours. Her speedometer constantly reads exactly 15 miles per hour during this time. Her average velocity is zero for the trip.
Your Answer: true View Explanation

The Nature of Fluids and Pressure

18) The force between your feet and the floor is greater while standing on your tiptoes than while standing flat on your feet.
Your Answer: false View Explanation
19) The pressure at the bottom of a 10-meter-deep, 20-kilometer-wide lake is higher than the pressure at the bottom of a 10-meter-deep well which is only 1 meter across. (Assume all things are equal except the parameters mentioned.)
Your Answer: false View Explanation
20) If an object is placed in water and sinks, it is because it has no buoyancy force acting on it.
Your Answer: false View Explanation

Newtonís Laws

21) An insect flying through the air smacks into the windshield of a rapidly-moving train. The force the windshield exerts on the insect is higher than the force the insect exerts on the windshield.
Your Answer: false View Explanation
22) Susan throws a ball in the air. After the ball leaves her hand, the ball accelerates in the upward direction as it is moving upward and accelerates in the downward direction as it is moving downward.
X Your Answer: View Explanation
23) Friction provides the force which "pushes" a car forward as it accelerates down the road. (Assume a flat road.)
X Your Answer: View Explanation
24) If a car hits a tree, the carís occupants (assume no seat belts or air bags) will be violently thrown forward at the time of the accident due to a force created by the car seats.
X Your Answer: View Explanation
25) A table resting on the floor pushes downward on the floor. The floor likewise pushes upward on the table.
X Your Answer: View Explanation
26) Ben travels to a distant planet. In outerspace, with essentially no gravity, he can throw a baseball (mass = 0.5 kg) and a shot put (mass = 4 kg) at the same speed with no discernable difference in effort.
X Your Answer: View Explanation

The Nature of Matter

27) 1000 liters of water is more dense than 10 liters of water. (Ignore the container. Assume water is incompressible and all conditions are equal except the ones stated.)
X Your Answer: View Explanation
28) Iron can exist as a gas.
X Your Answer: View Explanation
29) A cloud's mass consists primarily of water vapor.
X Your Answer: View Explanation
30) An atom is just like a tiny solar system in which the nucleus is like the Sun and electrons are like tiny planets orbiting the nucleus in elliptical paths.
X Your Answer: View Explanation
31) Under typical conditions, ice melts and water freezes at the same temperature.
X Your Answer: View Explanation
32) A solid object like a rock is almost entirely filled with empty space and only feels solid due to electrical repulsion forces
X Your Answer: View Explanation

Electricity

33) If lightning strikes a car, the people inside it will most likely be electrocuted, assuming that the carís tires are wet from rain and hence do not act as insulators.
X Your Answer: View Explanation
34) Voltage is the force which pushes electrons through wires.
X Your Answer: View Explanation
35) Jane reads that passing a current of 100 milliamps through a personís body from one hand to the other can be fatal. She accidentally grabs the positive terminal of her carís battery in one hand and the negative in the other. Her car has a 12-volt battery rated for 100 amps. Jane would most likely be electrocuted by her careless action.
X Your Answer: View Explanation
36) A light bulb is connected with a battery to form a simple circuit. A stream of electrons flows through the light bulb from the positive terminal of the battery to the negative terminal.
X Your Answer: View Explanation

Units

37) There are 100 cubic centimeters in a cubic meter.
X Your Answer: View Explanation
38) A milliliter is exactly the same size as a cubic centimeter.
X Your Answer: View Explanation
39) Two 90-decibel sound sources are turned on at the same time. Together they create a 180-decibel sound level.
X Your Answer: View Explanation
40) A mole of helium gas has exactly the same number of atoms as a mole of lead.
X Your Answer: View Explanation