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Seven days of questions and answers

Road Trip Trivia Answers Archive

Review earlier daily rounds, reveal the correct answer, and use the short explanation to learn the fact behind each question. Page 10 of 12 covers seven completed UTC days.

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Daily round

  1. What does the acronym GPS stand for?

    Answer: Global Positioning System

    GPS stands for Global Positioning System, a satellite-based navigation network maintained by the United States.

  2. When a vehicle pulls to one side while braking, what is the most likely cause?

    Answer: A stuck caliper or unevenly worn brake pads

    Uneven braking force — often from a seized caliper or worn pads on one side — causes the vehicle to pull toward the stronger-braking side.

  3. Which sleeping-bag rating is intended to describe the lower temperature at which a typical sleeper can remain comfortable?

    Answer: Comfort rating

    The comfort rating estimates the lower ambient temperature at which a typical sleeper can remain comfortable in the bag.

  4. At what tire tread depth is a tire generally considered bald and unsafe?

    Answer: 2/32 of an inch

    Most safety organizations and tire manufacturers consider 2/32 of an inch the minimum safe tread depth; below that, traction in wet conditions drops sharply.

  5. When choosing ice for a road-trip cooler, a large block of ice generally lasts significantly longer than bagged cubes because the block has less...

    Answer: surface area relative to its volume

    Less surface area per unit of volume means block ice melts more slowly than small cubes, which are exposed to warm air on many more sides.

Daily round

  1. On a compass, due east corresponds to which bearing?

    Answer: 90°

    Bearing 0° is north, and bearings increase clockwise, placing east at 90°.

  2. Which reference line represents 0° latitude?

    Answer: The Equator

    The Equator circles Earth halfway between the poles and serves as the zero line for measuring latitude north and south.

  3. In areas where bears are active, the most universally recommended method for overnight food storage at a backcountry campsite is using a...

    Answer: sealed bear canister or a food bag suspended from a high branch

    Bear canisters and properly hung food bags make it extremely difficult for bears to access food, protecting both campers and the animals from harmful encounters.

  4. Roughly what extent does the Pan-American Highway network span?

    Answer: From northern North America to southern South America

    The Pan-American Highway is a linked network running from northern North America to the southern tip of South America, with a gap in the Darién region.

  5. In the car game "The Name Game," a player names a famous person and the next player must name another person whose first name begins with the last letter of the previous name—for example, after "Michael Jordan" the next name must start with...

    Answer: N

    After "Michael Jordan," the next name must start with the last letter N, making someone like "Natalie Portman" a valid follow-up.

Daily round

  1. Hydroplaning occurs when a vehicle's tires lose contact with the road and skim across a layer of water, most commonly at speeds above about...

    Answer: 35 mph

    At speeds above roughly 35 mph, tires may not channel water away fast enough, causing them to ride on top of standing water and lose traction.

  2. Counting the 50 states, the United States spans how many standard time zones?

    Answer: Six

    Including Alaska and Hawaii, the 50 states use six zones: Eastern, Central, Mountain, Pacific, Alaska, and Hawaii–Aleutian.

  3. Freeze-dried meals are popular for road trips and camping because the freeze-drying process removes most of the food's...

    Answer: water weight

    Freeze-drying removes about 98 percent of a food item's water content, making it extremely lightweight while preserving nutrients and flavor for rehydration later.

  4. Sharing a ride with three other passengers instead of each person driving alone typically reduces per-person fuel consumption and emissions by about...

    Answer: 75%

    With four occupants in one vehicle instead of four separate cars, each person's share of the fuel use and emissions drops to roughly one-quarter, a 75 percent reduction per person.

  5. Monument Valley, known for its iconic red sandstone buttes, straddles the border of Arizona and which other state?

    Answer: Utah

    Monument Valley lies on the Arizona–Utah border within the Navajo Nation and has been one of the most photographed landscapes in the American Southwest.

Daily round

  1. A full turn around a compass covers how many degrees?

    Answer: 360

    A circle is divided into 360 degrees, so a complete compass sweep runs from 0 through 360.

  2. Why should you avoid packing items on the roof of a vehicle when it is not necessary?

    Answer: It increases aerodynamic drag and reduces fuel efficiency

    A loaded roof rack disrupts airflow over the vehicle, significantly raising drag and lowering fuel economy, especially at highway speeds above 50 mph.

  3. The Leave No Trace outdoor ethics principle regarding waste disposal is commonly summarized as...

    Answer: pack it in, pack it out

    Leave No Trace teaches that all trash, leftover food, and litter should be carried out and disposed of properly rather than left behind or buried.

  4. Why is it best to replace wiper blades that leave streaks or skip across the glass?

    Answer: Poor wiping leaves patches of water that distort the driver's view

    Worn blades cannot clear rain effectively, leaving opaque streaks that are especially dangerous when facing oncoming headlights at night.

  5. The Alaska Highway was originally constructed during which conflict?

    Answer: World War II

    Built rapidly in 1942 during World War II to connect the contiguous United States to Alaska, the highway originally served military supply needs.

Daily round

  1. Keeping at least one window slightly cracked during a long drive can help reduce passenger drowsiness because it...

    Answer: reduces carbon dioxide buildup inside the cabin

    A sealed cabin allows exhaled carbon dioxide to accumulate, which can make occupants feel sluggish; cracking a window promotes fresh air exchange.

  2. The Grand Canyon was carved over millions of years primarily by which river?

    Answer: the Colorado River

    The Colorado River has been cutting through layers of rock in northern Arizona for roughly five to six million years to form the Grand Canyon.

  3. To which reference does a handheld magnetic compass needle align?

    Answer: Magnetic north

    The magnetized needle responds to Earth's magnetic field and points toward magnetic north, which differs from geographic true north.

  4. What is the safest place to position a reflective warning triangle if your vehicle is disabled on a highway shoulder?

    Answer: Roughly 100 to 200 feet behind the vehicle, farther on a fast road

    Placing the triangle well behind the car gives approaching drivers enough distance to see it, slow down, and move over before reaching your vehicle.

  5. Which fluid leak under a vehicle is generally considered the most urgent to address?

    Answer: A pool of red or brown brake fluid

    Brake fluid is critical for stopping; a significant leak can lead to complete brake failure and should be inspected by a mechanic before driving further.

Daily round

  1. Which early twentieth-century route is widely remembered as one of the first transcontinental highways across the United States?

    Answer: The Lincoln Highway

    Established in 1913, the Lincoln Highway ran from New York to San Francisco and is credited as one of the earliest transcontinental automobile roads.

  2. Using cruise control on a long flat highway tends to improve fuel economy because it eliminates what?

    Answer: Unintentional speed fluctuations

    Cruise control maintains a steady throttle position, preventing the small accelerations and decelerations that human drivers unconsciously make and that waste fuel.

  3. Which of these is a sensible packing practice for a road trip?

    Answer: Distributing weight evenly and keeping the driver's line of sight clear

    Even weight distribution maintains predictable handling, and a clear sightline ensures the driver can see mirrors and the road without obstruction.

  4. What does a yellow or amber engine-shaped dashboard symbol (as opposed to red) usually indicate?

    Answer: A non-critical advisory that still requires attention

    Yellow or amber warning lights signal caution rather than immediate danger, meaning the issue should be investigated soon but is not an urgent safety threat.

  5. Road safety organizations recommend that drivers take a break from driving at least every...

    Answer: two hours or 100 miles

    Taking a break every two hours or roughly every 100 miles helps combat fatigue and maintain alertness behind the wheel.

Daily round

  1. Which common roadside emergency is most likely to leave a vehicle stranded and unable to start?

    Answer: A dead battery

    The battery provides the electrical power needed to crank the starter motor; if it cannot hold a charge, the engine will not turn over.

  2. What does the Mercator map projection distort most severely in regions near the poles?

    Answer: Area (relative size)

    Mercator preserves compass direction for navigation but greatly exaggerates the size of landmasses near the poles, such as Greenland.

  3. What does an oil-can dashboard symbol typically mean?

    Answer: Engine oil pressure has dropped below a safe level

    The oil-can warning indicates low oil pressure, which means moving parts are not being adequately lubricated and the engine could seize if you keep driving.

  4. How many primary cardinal compass directions are there?

    Answer: Four

    The four cardinal directions are north, south, east, and west; they form the base framework of all compass navigation.

  5. Driving at 65 mph instead of 75 mph can improve fuel economy by roughly what amount?

    Answer: About 10 to 15 percent

    Aerodynamic drag increases with the square of speed, so even a modest 10 mph reduction on the highway can yield a noticeable 10 to 15 percent fuel savings.