Science - Galaxies, Solar Systemds, and Planets Day 7

Galaxies, Solar Systems, and Planets
Day 7

By KELLY COOTS

Multiple Choice

Which of following objects do not revolve around the Sun?

• moons

• comets

• asteroids

• planets

​The Sun is the star at the center of the Solar System. Eight planets orbit the Sun. There are 205 moons that orbit the planets of the Solar System. There are five dwarf planets in addition to the eight major planets.

Multiple Choice

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

Multiple Choice

The order of the planets is:

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

Multiple Choice

What is in between the inner planets and the outer planets?

• Asteroid belt
• Kuiper belt
• Sun
• Moon

​Stars and planets are regularly shaped objects: they are spheres. Many moons and some dwarf planets are also spheres. Some moons are irregularly shaped objects: they might be shaped more like potatoes than spheres.

Multiple Choice

The moon is the Earth’s _______.

• Natural satellite

• Star

• Planet

• None of the above

Multiple Select

The planet with two moons is ___________.

• Mercury

• Earth

• Venus

• Mars

Multiple Choice

The planet(s) with no moons is/are _______ and ______.

• Venus and Mars

• Mars and Neptune

• Mercury and Mars

• Mercury and Venus

Multiple Choice

The planet with the highest number of moons is __________.

• Saturn

• Jupiter

• Neptune

• Uranus

​Asteroids are irregularly shaped rocky and metallic objects in the Solar System. Many of them orbit the Sun in a region called the asteroid belt. The asteroid belt is located between Mars and Jupiter. Asteroids can also orbit the Sun outside of the asteroid belt. Occasionally an asteroid will travel close to the Earth. It was an asteroid like this that struck the Earth 65 million years ago and caused the extinction of the large dinosaurs.

Multiple Choice

One similarity between asteroids, comets and meteoroids is that they all:

• are made of rock

• come from the Asteroid Belt

• come from the Oort Cloud

• orbit the sun

Multiple Choice

I am located between Mars and Jupiter.

• Comet belt

• Asteroid belt

• Meteor belt

• Stars

Multiple Choice

Huge chunks of rock and metal (some measuring miles wide) are believed to be left-over pieces of planets and moons called:

• Comets
• Meteors
• Asteroids
• Meteroids

Multiple Choice

^{Objects made of ice, gas and dust and orbit our sun are called:}

• Asteroids
• Comets
• Meteroids
• Meteors

​Comets are objects made of frozen gas and dust. Comets orbit the Sun far our beyond the planets. Some comets have orbits that bring them close to the Sun. As they come close to the Sun, the heat energy of the Sun begins to melt the frozen gases in the comet. These gases begin to stream out and form a tail. The tail of the comet reflects the light of the Sun.

​

Comets can leave behind a trail of debris. These dust and sand sized particles sometimes enter the Earth’s atmosphere, burning up high above the ground. These meteors are often seen as meteor showers. Smaller asteroids sometimes enter the Earth’s atmosphere. These smaller objects often break apart, forming a fireball as they burn up. Sometimes pieces of these meteors fall all the way to the ground, and can be found as meteorites.

Multiple Choice

What are comets made of?

• mud, rock, water

• ice and rock

• ice, dust, water

• gas and dust

Multiple Choice

A light streaking across the night sky is classified as a/an....

• Meteorite
• Asteroid
• Comet
• Meteor

Multiple Choice

Meteorites...

•  hit the ground
• burn up completely in the atmosphere
• debris from asteroids/comets that float around in space

Multiple Choice

Meteors...

• burn up completely in the atmosphere producing streaks of light
• hit the ground
• debris from asteroids/comets floating around in space

Multiple Choice

These objects that orbit the sun are nicknamed, "dirty snowballs."

• Comets
• Asteroids
• Meteors
• Meteroids