motion
changing position is called _______
motion
what is ecosystem
it has living and nonliving things
what is the opposite of attract
repel
tell me one thing that the animal need to survive
air, water, shelter, food
how many poles in the magnet
2
how far two things is ______
distance
what is resource
مورد
how many charges do we have
positive and negative
when animals TRAVEL to a warm place, it is called __________
migration
north and south, they attract or repel
attract
_______ how fast something is moving
speed
what is competition
منافسة
positive and positive, they attract or repel
repel
when animals sleep during winter. it is called________
hibernation
give me example of magnetic object
steel, silver, cobalt, nickel
tell me one type of motion
zigzag, straight line, round and round , back and forth
give me example of living thing
......
a buildup of electric charge
static electricity
when animals blend in with environment , it is called________
camouflage
give me example of non magnetic object
plastic, rubber,,,,, etc
_______ it causes things to slow
friction
give me example of nonliving thing
.....
what is the name of the inventor of light
thomas edison
____________ is a structure that helps animal survive
adaptation