Question 1: Why do walruses have tusks?
- For mating and defense
- To dig for food
- To kill prey
Correct Answer: For mating and defense
Fact: The tusks are elongated canine teeth and can grow up to 3.2 feet long, weighing up to 12 pounds. They are used in mating displays and for defense during battles with other males. Both sexes have tusks, and also use them to pull themselves out of the water and to make breathing holes in the ice.
Question 2: What is the midnight sun?
- 24 hours of daylight
- Sunset at midnight
- Sunrise at midnight
Correct Answer: 24 hours of daylight
Fact: The midnight sun is a summertime phenomenon here in the Arctic, when the sun never sets below the horizon, even at midnight. The Norwegian archipelago of Svalbard experiences midnight sun between late April and late August. It’s all due to the Earth’s 23.5-degree tilt, relative to the sun, and the closer you are to the North Pole, the longer it lasts.
Question 3: What causes the northern lights?
- Cosmic radiation
- Solar winds
- Smoke particles in the air
Correct Answer: Solar winds
Fact: Also known as the aurora borealis in the Northern Hemisphere, the northern lights are luminous arcs or bands of green, red, or other colors seen in the night sky. They’re caused by protons and electrons of solar winds (outflows from the sun) interacting with Earth’s upper atmosphere.