SCIENCE (Review Activity NO. 1.5)- ASTEROIDS AND METEORS

What are asteroids also known as?

• Comets
• Planetoids
• Meteoroids
• Dwarf planets

Where do most asteroids orbit the Sun?

• Between Earth and Mars
• Between Mars and Jupiter
• Between Jupiter and Saturn
• Between Saturn and Uranus

What is the shape of the orbit of asteroids in the asteroid belt?

• Circular
• Slightly elliptical
• Parabolic
• Spiral

How long does it take for an asteroid to complete one revolution around the Sun?

• 1-2 Earth years
• 3-6 Earth years
• 7-10 Earth years
• 11-15 Earth years

What is the range in size of asteroids?

• From dust particles to about 100 miles
• From tiny pebbles to about 578 miles
• From 1 mile to about 1000 miles
• From grains of sand to about 500 miles

How many of the known asteroids are over 150 miles in diameter?

• 10
• 12
• 16
• 20

Which is the largest asteroid in the inner Solar System?

• Ceres
• Vesta
• 243 Ida
• Dactyl

Which asteroid is the brightest visible from Earth?

• Ceres
• Vesta
• 243 Ida
• Dactyl

What is unique about the asteroid "243 Ida"?

• It is the smallest asteroid
• It is the largest asteroid
• It is the closest asteroid to the Sun
• It was the first asteroid found with an orbiting moon

What is the size of Dactyl, the moon of asteroid "243 Ida"?

• 5 miles across
• 10 miles across
• 1 mile across
• 20 miles across