Wonders Unit 5 Week 4- When a Planet is Not a Planet and Changing Views of Earth

What was the sentence originally used to memorize the planets order?

• May values exist monthly just somewhere under night please

• My very eager mother just served us nine pizzas

• There is no way to remember the order

Which planet is no longer a planet?

• Saturn

• Uranus

• Neptune

• Pluto

To orbit means...

• to travel in a line

• to travel around the Sun

• to travel under the Moon

The two different traits of the groups of planets are:

• The planets closest to the sun and the planets farthest away

• Hot planets and cold planets

• Planets with life and planets without life

Most scientist believe that our solar system began as a

• space dust called a neutron

• space rock called a nebuic

• space cloud called a nebula

What happened when the Sun began to grow?

• The sun became hotter and release only more heat

• There was no significant change after the Sun grew

• High temperatures and pressure caused hydrogen to fuse with helium and put off light energy

What caused the pulling and tugging of bits of rock, dust, ice, and gas to form together in clumps we now call planets?

• The sun's gravity at work

• The Suns orbit

• The Suns heat

What was the effect of the planets closest to the Sun's heat blasting away their gas?

• It left behind lots of metorids

• It left behind solid spheres of matter, with only a little gas

• It left behind space rock with cooler gases

Lng ago humans based their knowledge on what?

• On what they could experience with heir eyes and ears

• On the things they could touch and see

• On what they read about in newspapers

The diagram on page 353 shows:

• the direction of the orbit in the solar system

• The geocentric and heliocentric views of the solar system