2)the needle of compass line up with earth magnetic field and point to_________
a)earth poles b)earth equator
3)magnetic field lines that curve toward each other show_________
a)repulsion b)attraction
4)some animals have tiny pieces of ___________in their brains to help them find their way
a)magnetite b)magnetosphere
5)a magnet contain a large number of magnetic _____that are lined up and pointed in the same direction.
a)domains b)poles
Answer:
1 . a) the poles
2. a) earth poles.
3. b) attraction.
4. a) magnetite.
5. a) domains.
Explanation:
The magnetic field is strongest at the poles and very weak at the center of the magnet.
The magnetic compass will always align along the north - south poles of the earth. North of the compass needle is attracted towards the magnetic south pole of the earth.
Magnetic Field lines begin at the north pole of the magnet and end at the south pole. Unlike poles attract and like poles repel , so they curve for unlike poles.
Magnetite is a magnetic mineral, which is present in the animal brains , enabling them to identify correct directions.
Magnetic domains are regions where individual magnetic moments of the atoms are aligned in a definite direction.
All the bats living in a cave form a __colony__of bats in the cave ecosystem.
O a. is shown only as the planetary model
b. shows exactly what an atom looks like
c. helps to visualize processes that cannot be seen with our eyes
d. magnifies what the eye can't see