Eclipses

Which of these accurately describes an umbra?

• An umbra only forms on flat surfaces.

• An umbra is only visible during nighttime.

• An umbra is the darker, center part of a shadow.

• An umbra is the part of a shadow that allows some light from a given light source.

Why is the penumbra of a shadow lighter than its umbra?

• A penumbra receives light from multiple sources.

• A penumbra receives some light from a given light source.

• A penumbra only appears to be lighter depending on your orientation to the light source.

• A penumbra directly receives all the light from a light source.

Tags

NGSS.MS-PS4-2

What is an eclipse?

• an event in which two penumbras overlap and create their own umbra

• an event in which the shadow of one celestial object falls on another celestial object

• an event in which the length of Earth’s umbra causes all light to be blocked from reaching the moon

• an event in which the umbra from one celestial object merges with the umbra of another celestial object

Tags

NGSS.MS-ESS1-1

Due to Earth’s spherical shape, its umbra casts a shadow in the shape of a

• circle.

• cone.

• cylinder.

• triangle.

Tags

NGSS.MS-ESS1-1

When is a lunar eclipse likely to occur?

• during the new moon lunar phase

• during the third quarter lunar phase

• when the moon passes between Earth and the sun

• when Earth passes between the sun and the moon

Tags

NGSS.MS-ESS1-1

What event is said to occur when the moon moves completely into Earth’s umbra?

• a total lunar eclipse

• a total solar eclipse

• a partial lunar eclipse

• a partial solar eclipse

Tags

NGSS.MS-ESS1-1

What is one effect that a partial lunar eclipse has on the appearance of the moon?

• Half of the moon always remains visible.

• The moon appears to take on a blue color.

• It looks like the moon is a waning gibbous moon.

• The part of the moon that is not in the umbra remains bright.

Tags

NGSS.MS-ESS1-1

Which of these statements does NOT accurately describe a solar eclipse?

• The moon blocks light from the sun.

• The moon’s light is visible from Earth.

• The sun may disappear from view before returning to normal.

• The sun grows darker and seems to change shape.

Tags

NGSS.MS-ESS1-1

Where or when can viewers on Earth experience a partial solar eclipse?

• near the equator

• near one of the poles

• when they are in the moon’s umbra

• when they are in the moon’s penumbra

Tags

NGSS.MS-ESS1-1

What is a corona?

• the moon’s penumbra during a solar eclipse

• the point at which the solar eclipse finally ends

• the sun’s glowing ring caused by the moon during a solar eclipse

• the point at which the moon appears to be a dark disk during a solar eclipse

Tags

NGSS.MS-ESS1-1