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Seven days of questions and answers

Summer Trivia Answers Archive

Review earlier daily rounds, reveal the correct answer, and use the short explanation to learn the fact behind each question. Page 7 of 12 covers seven completed UTC days.

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Daily round

  1. What latitude is the Tropic of Cancer near?

    Answer: 23.5 degrees north

    The Tropic of Cancer lies at approximately 23.5 degrees north latitude.

  2. What process allows plants to convert light energy into chemical energy?

    Answer: Photosynthesis

    Photosynthesis uses light to build energy-rich sugars from carbon dioxide and water.

  3. What scale measures ultraviolet radiation's potential to harm skin and eyes?

    Answer: UV Index

    The UV Index communicates the expected intensity of sunburn-producing ultraviolet radiation.

  4. Which Canadian national holiday occurs on July 1?

    Answer: Canada Day

    Canada Day marks the anniversary of Canadian Confederation on July 1.

  5. What sport uses a shuttlecock?

    Answer: Badminton

    Badminton players strike a feathered or synthetic shuttlecock across a net.

Daily round

  1. What does the heat index combine?

    Answer: Air temperature and relative humidity

    The heat index estimates how hot conditions feel from temperature and humidity together.

  2. Which French national celebration occurs on July 14?

    Answer: Bastille Day

    France's national day on July 14 is commonly called Bastille Day in English.

  3. How many players are on the court for one beach volleyball team?

    Answer: Two

    Standard beach volleyball teams consist of two players.

  4. Midsummer celebrations are especially prominent in which European region?

    Answer: Scandinavia

    Sweden, Finland, Norway, and Denmark maintain particularly visible Midsummer traditions.

  5. What sound-producing structures do male cicadas vibrate?

    Answer: Tymbals

    Male cicadas rapidly buckle ribbed abdominal membranes called tymbals to make calls.

Daily round

  1. Which surface is used at the Wimbledon tennis championships?

    Answer: Grass

    Wimbledon's outdoor courts use closely maintained perennial ryegrass.

  2. What electrolyte is lost in the greatest quantity through sweat?

    Answer: Sodium

    Sodium is the dominant electrolyte lost in sweat, though amounts vary by person and conditions.

  3. Which reptile regulates body temperature mainly by moving between sun and shade?

    Answer: Lizard

    As an ectotherm, a lizard uses environmental heat and behavior to control body temperature.

  4. Through which leaf structures does most gas exchange occur?

    Answer: Stomata

    Microscopic pores called stomata regulate carbon dioxide uptake and water-vapor loss.

  5. Which vegetable is harvested as the immature flower head of a thistle relative?

    Answer: Artichoke

    The edible globe artichoke is an unopened flower head in the thistle family.

Daily round

  1. Which Chinese festival held in early summer features boat races?

    Answer: Dragon Boat Festival

    The Dragon Boat Festival is marked by racing long boats decorated with dragon designs.

  2. Earth reaches aphelion, its farthest point from the Sun, during which Northern Hemisphere season?

    Answer: Summer

    Earth reaches aphelion in early July, demonstrating that axial tilt rather than distance drives the seasons.

  3. What does SPF on sunscreen primarily indicate?

    Answer: Protection against UVB-caused sunburn

    Sun Protection Factor measures how well a sunscreen protects against UVB-induced redness under test conditions.

  4. Why are Northern Hemisphere days generally longer in summer?

    Answer: The hemisphere tilts toward the Sun

    Earth's axial tilt points the Northern Hemisphere toward the Sun, lengthening its daylight period.

  5. What flying toy is held aloft by wind acting on a tethered surface?

    Answer: Kite

    A kite develops aerodynamic lift while a line restrains it against the wind.

Daily round

  1. Which region can experience the midnight Sun during part of Northern Hemisphere summer?

    Answer: Arctic Circle

    Locations north of the Arctic Circle can have at least one day when the Sun remains above the horizon.

  2. Which U.S. holiday is observed on July 4?

    Answer: Independence Day

    The United States observes Independence Day on July 4, commemorating the Declaration of Independence.

  3. Which part of sunglasses protects the eyes from ultraviolet radiation?

    Answer: UV-filtering lenses

    Proper UV-filtering lenses reduce ultraviolet exposure regardless of how dark the tint appears.

  4. Which cold Spanish soup is based on blended raw vegetables?

    Answer: Gazpacho

    Gazpacho is an Andalusian chilled soup commonly made with tomato, pepper, cucumber, and bread.

  5. Which dance is commonly performed at Japanese Obon festivals?

    Answer: Bon odori

    Bon odori consists of communal folk dances performed during Obon.

Daily round

  1. What causes thunder?

    Answer: Rapid expansion of air heated by lightning

    Lightning heats air extremely quickly, and the resulting expansion creates a shock wave heard as thunder.

  2. What is one stroke under par on a golf hole called?

    Answer: Birdie

    A birdie means completing a hole in one stroke fewer than its par.

  3. Which decorated pole is raised during Swedish Midsummer celebrations?

    Answer: Maypole

    Swedish Midsummer gatherings commonly include dancing around a flower-decorated maypole.

  4. What is the Sun's apparent position at local solar noon on a sundial?

    Answer: Its highest point of the day

    Local solar noon occurs when the Sun reaches its highest daily altitude in the sky.

  5. Which storm rotates around a low-pressure center over warm tropical water?

    Answer: Tropical cyclone

    A tropical cyclone is an organized rotating storm system powered by warm ocean water.

Daily round

  1. Which frozen dessert is churned while freezing to limit large ice crystals?

    Answer: Ice cream

    Churning ice cream incorporates air and discourages coarse ice crystals.

  2. How many holes are played in a standard full round of golf?

    Answer: 18

    A regulation full round of golf is played over eighteen holes.

  3. What cloud type commonly produces summer thunderstorms?

    Answer: Cumulonimbus

    Cumulonimbus clouds grow vertically and can generate lightning, heavy rain, hail, and strong wind.

  4. Which flower is named for its tendency to face the Sun while young?

    Answer: Sunflower

    Young sunflower heads track the Sun across the sky through heliotropism.

  5. Which island group gave the Hawaiian shirt its geographic association?

    Answer: Hawaiian Islands

    The colorful garment developed in Hawaii and became known internationally as the Hawaiian or aloha shirt.