What is a solar system?
A system of planets, moons, and other objects orbiting a star.
Name one example that is the source of light.
Sun, fire, light bulb, lamp, stars
Why does the Sun appear to move across the sky?
Because the Earth is spinning.
What do we call the imaginary line the Earth spins on?
Axis
What do we call the path a planet takes around the Sun?
Orbit
Why do we have day and night?
The Earth spins on its axis.
What happens to shadows when the Sun moves?
They change size and direction)
What would happen if the Sun disappeared?
It would be dark and cold on Earth.
How does light help us see objects?
It bounces off objects and into our eyes
What causes shadow?
when light is blocked by an object
What happens when light is blocked?
A shadow is formed
Why do shadows get shorter in the middle of the day?
The Sun is directly above us
How can we show that light travels in straight lines?
By using a ray diagram.
What is the main source of light on Earth?
Sun
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Why does the Sun look bigger than other stars?
Because it is closer to Earth than other stars.
What is the closest planet to the Sun?
Mercury
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What would happen if the Earth didn’t spin?
One side would always be day, and the other side would always be night.
What happens when light hits a mirror?
It reflects
How does light travel?
In straight lines
What happens when the Earth spins on its axis?
Day and night occur
How does a shadow change from morning to evening? What is the pattern?
It starts long in the morning, gets shorter at noon, then gets long in the late afternoon again.)