simple machines
used to hold things together
what is a screw?
light can go through opaque objects like a cardboard box
what is false?
ice cube
what is a solid
melting chocolate is a reversible or non-reversible change?
what is reversible because you can cool it to harden again
_ _ A _ _ _ A _ E _ _
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T R A N S P A R E N T
a jar and lid
what is a screw?
light can go through transparent objects like glass
what is true?
you can pour it
what is a liquid?
deserts can be hot or cold true or false?
what is true. Deserts can be hot in the day and cold at night. Antarctica is a desert of ice and snow.
_ O _ I _ _ _ I _ U I _ S A _ _ _ A _ E S
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S O L I D S L I Q U I D S AND G A S E S
used to hold a door open
what is a wedge?
light travels faster than sound true or false
it can spread the quickest
what is a gas?
Name 3 things that can melt
what is ice? wax? crayons? marshmallows? snow?
_ U _ _ E Y
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P U L L E Y
used to open a door
wheel and axle?
a tree leaf or tissue is which of the following
opaque, transparent, translucent, dark
what is translucent?
often invisible
what is a gas?
Name something that is reversible or can change back to its original form (like cocolate)
ice, water, butter, wax
_ O _ O _ _ O _ _
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H O T OR C O L D ?
a slide at a playground
what is an inclined plane?
objects that block light are called
transparent, translucent, opaque
what is opaque?
keeps its form
what is a solid?
what happens to water in a pot when you boil it? where does it go? what does it do?
water turns from a liquid to a gas and it goes into the air as water vapor
_ I _ _ _ E _ A _ _ I _ E S
You can solve it or guess 3 letters
S I M P L E M A C H I N E S