Human Body
Eyes
Force
Solar System
Energy
100

More than 630 of these keep your body going.

What are muscles?What is lightning?

100

It is a black circle in the center of the iris.

What is a pupil?

100
Force that causes a change in motion.
What is an unbalanced force?
100
The star closest to our planet.
What is the Sun?
100

This is energy in motion.

What is kinetic energy?

200

These muscles work without you having to do a thing.

What are involuntary muscles?

200

It sends visual messages to the brain.

What is a retina?

200
A push or a pull that changes the motion of an object.
What is a force?
200
The path one object takes around another object in space.
What is an orbit?
200

This is stored energy.

What is potential energy?

300

They are flexible connections where two or more bones meet.

What are joints?

300

It focuses light on the retina.

What is a cornea?

300
A force that causes a spring scale to show weight of an object.
What is gravity?
300
One of these takes about 365 days.
What is Earth's revolution around the Sun?
300

Plants create their own energy through this process.

What is photosynthesis?

400

These muscles are estimated to move about 100,000 times a day.

What are eye muscles?

400

This is the “white” of your eye.

What is sclera?

400
The measure of distance an object moves in a given time.
What is speed?
400
This takes about 27 days.
What is the moon's revolution around the Earth?
400

This type of energy involves voltage.

What is electric energy?

500

These strong straps of tissue hold our bones together.

What are ligaments?

500

They are tiny muscles around the lens that squeeze and relax to change the shape of the lens.

What are ciliary muscles?

500
A force that opposes motion and acts between 2 objects that are touching.
What is friction?
500

the Earth does this in a 24 hour period.

What is rotate on it's axis?

500

A form of radiant energy that can travel through space.

What is light?

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