April 5th test-Grade3

Question 1

anything that has mass and takes up space

Answer 1

matter

Question 2

the amount of matter that something contains

Answer 2

mass

Question 3

something that describes matter

Answer 3

property

Question 4

a property that can be observed by the senses, such as touch and sight

Answer 4

physical property

Question 5

a property that describes how matter can change into another kind of matter

Answer 5

chemical property

Question 6

a change in size, state of matter, or shape

Answer 6

physical change

Question 7

a change in matter in which a new kind of matter is formed

Answer 7

chemical change

Question 8

the ability to cause a change in matter

Answer 8

energy

Question 9

energy of motion of tiny particles

Answer 9

heat

Question 10

a form of energy that you can see

Answer 10

light

Question 11

a property of blocking light

Answer 11

opaque

Question 12

something that makes a task easier to do

Answer 12

machine

Question 13

a push or a pull

Answer 13

force

Question 14

a force that pulls objects toward each other. The size of this force depends on the size of the object

Answer 14

gravity

Question 15

a device that changes the size and direction of a force

Answer 15

simple machine

Question 16

a wheel around which a rope or chain is passed

Answer 16

pulley

Question 17

two wheels that turn together (a simple machine)

Answer 17

wheel and axle

Question 18

a simple machine made of a bar that turns around a fixed point.

Answer 18

lever

Question 19

a fixed point around which a lever turns

Answer 19

fulcrum

Question 20

attracts objects made of steel or iron, like nails or paper clips

Answer 20

magnets

Question 21

what part of the body exchanges carbon dioxide (that your body can’t use) for oxygen that it needs?

Answer 21

lungs

Question 22

what is our largest organ and helps to protect our internal organs?

Answer 22

skin