vocab
key concepts
main ideas
earth phase
sun layers
100

Orbit

To travel around in a circle


100

The moon ______ the Earth

the moon orbits the earth

100

Gravity...

pulls objects towards each other

100

When the moon is full on Earth the Earth is _______ on the moon

new

100

The first layer of the sun is... (innermost)

The core; where a reaction of nuclear fusion occurs with hydrogen.

200

illuminate

to make visible with light


200

Does the earth cast a shadow on the moon?

NO

200

Why don't the planets crash into the sun?

The planets are moving too fast around the sun. There is a balance between gravity and motion so the planets can continue moving without crashing.

200

When the moon is on it's first quarter (half moon) on Earth the Earth is...

Half earth

200

The second layer of the sun is...

radiative layer

300

Lunar eclipse

when the earth casts a shadow on the moon

300

The moon is always lit up ________

half way

300

The moon is so predictable because...

it orbits the earth in the same exact pattern

300

When the moon is new on Earth the Earth is...

full

300

The third layer of the sun is...

convection layer

400

Convection layer

The layer of the sun in which convection occurs

400

Does the same side of the moon always face the earth?

yes the moon rotates as it orbits the Earth so one side of the moon is always facing the earth.

400

All matter is made up of

balls; spheres

400

When the Earth is on it's waning crescent phase on the moon the Earth is in...

waxing crescent

400

The fourth layer of the sun is...

The photosphere, the visible layer of the sun that we see from earth

500
Scale

The relative size of objects

500

The moon moves in different positions around earth so...

we see different sides of the illuminated half of the earth

500

Energy cannot be...

created or destroyed

500

The Earth phase is always directly _______ from the phases of the moon

opposite

500

The outermost layer of the sun is...

The corona

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