Ch 23 part 10 meteoroids and Comets

Ch 23 part 10 meteoroids and Comets

Meteoroids

Meteoroids are pieces of rock, usually less than a few hundred meters in size and that travel THROUGH the Solar system.

Meteoroids continued

Meteoroid are found IN space

Meteors are found ENTERING a planets atmosphere. (often called shooting stars)

Meteorites are a meteor that has made it through the atmosphere and strikes the SURFACE of the planet.

Multiple Choice

true/false Meteoroids strike a planets surface.

• True

• False

Multiple Choice

True/ False Meteoroids are found in space,

• True

• False

Meteor showers

Meteor showers are visible from Earth, but conditions have to be favorable: no clouds, best if it is a New Moon, or Crescent moon.

There will be 15 meteor showers in 2021.

"Fireball" meteors will be visible from Halley's comet on May 5, 2021

Comets

Dusty pieces of ice and rock that partially vaporize when they pass near the Sun.

Halley's Comet passed Earth in 1986, and will not pass again until 2061.

Multiple Choice

True/False Comets are pieces of ice and rock.

• True

• False

Parts of a Comet

A comet is made up of 3 visible parts:

The nucleus is the solid inner core of a comet.

The coma is a cloud of gas and ice which form a fuzzy outer layer.

The tail has gas and dust streams caused from passing close to the Sun.

Multiple Choice

True/ False A comet has 5 visible parts

• True

• False

Halley's Comet

Halley's comet is a "periodic" come and returns to Earth about every 75 years and is visible for the naked eye.

Multiple Choice

True / False Halley's Comet is not visible to the naked eye when it is passing Earth.

• True

• False

Multiple Choice

True/ False Halley's comet passes by Earth about every 80 years.

• True

• False