Simple Machines
A tool with only a few parts that helps you do work is called a _____
A machine made up of two or more simple machines is called a ________
complex machine
True or false: People can live with only one kidney.
true
A force is a or a that causes movement.
push or a pull
How many colors are in the rainbow?Name them
Seven, Red, Orange, Yellow, Green, Blue, Indigo, Violet
What two simple machines are combined to make scissors?
Scissors consists of a wedge and a lever.
An axe is a complex machines. It consists of an _____________ and a _________
wedge and a lever
Explain why the skin is part of the excretory system.
Eliminates excess water and salts from body through sweat.
A force can change the direction of a moving object.
true
Does sound travel faster in the air or in water?
Water
Pulley, Inclined Plane, Wedge, Screw, Lever, Wheel & Axle
Shovel are complex machines, which two simple machines make up a shovel?
Shovels consists of a wedge and a lever.
Name 3 organs that make up excretory system.
skin, liver, large intestine, lungs, and kidneys
A force cannot change the shape of an object.
true
What is the fastest land animal in the world?
Cheetah
A chisel is what type of machine?
Wedge
A corkscrew is a complex machine that consists of a ________ and a _________.
Corkscrews consists of a screw and two levers.
It helps to breaks down many substances in the blood, including toxins.
Without gravity we would________.
float away
What is the biggest planet in our solar system?
Jupiter
Give an example of each type of simple machine.
any
Name all parts of complex machines
Name all 5 organs that make up the excretory system
skin, liver, large intestine, lungs, and kidneys
The concept of gravity was discovered by which famous physicist?
Sir Isaac Newton
What metal is the best conductor of electricity?
Silver