How we see things
What is light?
A form of energy that help us to see
How does light travel?
In straight lines
Which object would block light and form a shadow?
A. Clear plastic B. Glass C. Wood D. Water
C. Wood
Which planet has the most moons?
Saturn
What is the imaginary line Earth spins around called?
Axis
__________is a natural source of light
Sun
_________objects allow light to pass through.
Transparent
What object can change the direction of light?
Mirror
What makes Earth different from other planets?
It has life and liquid wate
Day and night are a result of________.
Earth’s rotation
What happens if light is blocked by an opaque object?
A shadow is formed
If you place your hand in front of a flashlight, what will you see on the wall?
A shadow of your hand
What do ray diagrams show?
How light travels
Which planet is known as the red planet?
Mars
The Earth spins from ___ to ___.
west, east
Why can we see objects?
Because light reflects off them into our eyes
What are the three things needed to form a shadow?
A light source, an object, and a surface or screen.
What kind of surface reflects light well?
Shiny and smooth
Why do you think Mercury doesn’t have any moons?
Because it is too close to the Sun. The Sun’s gravity might pull away any moons before they can stay in orbit.
What is the difference between rotation and orbit?
Rotation is Earth spinning on its axis, which causes day and night. Orbit is Earth moving around the Sun, which takes one year.
What is the difference between natural and artificial light sources?
Natural light sources are made by nature and cannot be turned on or off. Artificial light sources are made by humans and can be turned on or off.
Why can't we see around corners without a mirror?
Because light travels in straight lines and cannot bend around corners
What is the difference between reflection and refraction?
Reflection is the bouncing of light off a surface while refraction makes things look bent, broken, or in a different place
Why does Earth have leap years?
Because one Earth year is 365.25 days, and we add a day every 4 years to balance the calendar.
why the Earth’s rotation is important for life?
Earth’s rotation gives us day and night, which helps people, animals, and plants follow a natural rhythm for activity and rest.