Understanding Astronomical Phenomena

What causes solar flares can occur?

• When the Sun's equator spins at a faster rate than it's poles do

• When magnetic field lines from sunspots tangle and erupt

• When the magnetic poles of the sun swap places

• When the temperature of the sun increases

What happen when giant CMEs hit the Earth's magnetosphere and induce currents in electrical systems on Earth?

• Can interfere with our radio communications

• Exposure to skin cancer in humans

• Increases in Earth's temperature

• Causes major blackouts

How does a solar eclipse occur?

• When the Moon is positioned precisely between the Earth and Sun

• When the Earth is positioned precisely between the Moon and Sun

• When one heavenly body moves into the shadow of another heavenly body

• When the Sun, Moon and Earth are not exactly aligned

This eclipse happen when the Moon is farthest from Earth. What types of eclipse is this?

• Total solar eclipse

• Partial solar eclipse

• Annular solar eclipse

• Partial lunar eclipse

What phase which starts after full moon and last until the third quarter moon?

• Waxing gibbous moon

• Waning gibbous moon

• Waning crescent moon

• Waxing crescent moon

How much full moon occur in one year?

• 15

• 13

• 10

• 12

What is the warmest season of the year?

• Summer

• Winter

• Autumn

• Spring

When is the winter solstice occur?

• June 20/21

• June 21/22

• December 20/21

• December 21/22

Choose the types of twilight

• Astronomical twilight

• Sunrise twilight

• Nautical twilight

• Civil twilight

what can cause the sunset to occur?

• Sun's rotation

• Moon's rotation

• Earth's rotation

• Solar's rotation