rocks and minerals
what is the most common rock
it is the sedimetary rocks
when you can't see through an object what is that called
it is call an opaque
why do we need gears and pulleys
to make life easier and do things using that force
what old item is used to hear better
it is an ear trumpet
what habitat does a shark live in
it lives in the ocean
why do we need paleontologists
Fossils give us useful information about the history of life on Earth
what's the diffrents between a normal person see in the front and the back
the front will be more clear and the back will be a little blurry
what is the easiest pulley to pull
it is the combined pulley
what does doctors use to hear your heartbeat
a stethoscope the vibrations of a heart
what does the food chain always start with
the sun
what are metamophic rocks formed by
How are mirages made?
Mirages happen when light beams are affected by air and don't go straight.
What is the outer area of gear called?
its teeth
what part of your ear catches the sound
the outer ear when it catches the sound it sends it to the ear canal
what are the main reason animals go extinct
the animals lose their habitat
What is a outcrap of fossils?
A outcrap is exposed when it is dug.
what makes a automatic door open
a photocell when your shadow goes into the bottom of the photo cell it will make the door open
What is the earliest known bicycle called?
It is called a Draisienne.
how many parts are inside of the middle ear outer ear and the inner ear
there are 6
What habitat is the most endangered?
The forest habitat is the most endangered.
what minerals is on sea salt
it is halite
how many telephone messages can be in one optical
fiber?
it can hold 1000 telephone messages at the same time
what two specials gears are in a bike
there are 2 , high and low gear
Which place discoverd that vibrations make sound?
Greek discovered that vibrations make sound.
what are all the habitats
there are 5 desert arctic jungle savanna and plains