Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
100
What is the invisible line the Earth rotates on called?
The axis.
100
What are stars?
Balls of very hot gases.
100
What are 2 characteristics about inner planets?
They have solid surfaces and are relatively small.
100
Why is Jupiter, Saturn, Uranus, and Neptune called Gas Giants?
They do not have surfaces but, we can see their atmospheres.
100
What are astroids made of?
Rock.
200
How long is a revolution?
365 days
200
What part of the Sun gives off light?
The photosphere.
200
How do the planets stay in orbit?
By the force of the sun's gravity.
200
How is Jupiter's rotation different then the Earths rotation?
Jupiter's rotation is two times faster than Earth's rotation.
200
What is a shooting star?
A meteor.
300
Why does the sun appear to move from east to west across the sky?
The Earth's rotation.
300
Why is Polaris called the North Star.
It sits directly on top of the North Pole, and seems to stay in place when the Earth is rotating.
300
How are craters made?
When meteorites or space rocks crash into a surface.
300
What are the rings around Saturn made of?
Ice, dust, and rock.
300
What are comets made of?
Ice.
400
What causes seasonal differences in parts of Earth?
Earth's tilt and revolution.
400
What are 4 characteristics about the sun?
The sun is a fiery ball of hot gases. The sun has no hard surfaces. The sun gives off light. The sun gives off heat.
400
What makes Venus so bright?
Its clouds.
400
What is one possible reason why Uranus rotates on its side?
A large object may have hit the planet while the solar system was forming. Then, the bump may have knocked Uranus on its side.
400
Which inner planets have moons?
Mars and Earth.
500
What did people think about the sun a thousand years ago?
That the sun revoled around the Earth.
500
What is a solar flare?
An eruption of sun waves and particles.
500
Why is Mars called the "Red Planet"?
The soil holds iron oxide, that makes rust.
500
Why are Uranus and Neptune blue?
Their atmosphere's have methane.
500
When was Pluto discovered?
In 1930.
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