Test: Spaceship Earth

orbit

Curving path that a moving body takes around another body in space

All asteroids lie in the asteroid belt between Mars and Jupiter.

False

Earth can be called a "spaceship" because it is man made.

False

Meteors are meteoroids that hit the earth.

False

Only sunspots can be called solar activity.

False

The earth is perfectly round.

False

In the sun, hydrogen is converted to ____________________ through nuclear fusion.

Helium

Choose the correct order of the planets:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Since the moon is so small in size in relation to the earth, only a small area of planet earth will see a:

Solar eclipse

The ancient Jews began their day at:

Sunset

During a lunar eclipse, the moon appears to be darkened because _______________ is casting a shadow on it.

The earth

A fact is something that has been proven to be true.

True

A total solar eclipse is seen by people living in the path of the umbral shadow.

True

An annular solar eclipse occurs when the moon is at its farthest point from the earth during a total eclipse.

True

Longitude is the distance measured in degrees from the Prime Meridian.

True

Solar flares produce x-rays, radio waves, and clouds of atomic particles.

True

There are four time zones in the continental United States.

True

comets

bright objects with a nucleus, coma, and tail

umbra

dark center of a shadow

7,900 miles

diameter of earth at Poles

meteorites

fall to earth

Penumbra

lighter outer region of a shadow

595 million miles

one orbit of earth around sun

eclipse

partial obscuring or darkening of one body by another

ecllipse

shape of earth's orbital path around sun

meteors

shooting stars

asteroids

thousands of "small planets" orbiting the sun

"Spaceship Earth" travels about ________________________ miles per hour in its journey around the center of the Milky Way.

101,000

The earth is tilted on its axis at an angle of __________________ .

23 1/2°

The sun rotates on it axis once every:

25 days 9 hours

The sun contains _______________ percent of the mass of the solar system.

99