Science 3rd Qtr - May the FORCE be with you...

Question 1

Is it true that force is applied in everyday activities?

Answer 1

True

Question 2

Force can be measured using a device called _______

Answer 2

force measurer

Question 3

A ______ is a push or pull upon an object resulting from the object’s interaction with another object

Answer 3

force

Question 4

Example of a force measurer?

Answer 4

spring balance

Question 5

Is a device that stretches according to the amount of force applied. The larger the force, the more stretched the spring balance becomes.

Answer 5

spring balance

Question 6

Force is measured in units called ______.

Answer 6

newton

Question 7

In symbol, newton is written as _____.

Answer 7

N.

Question 8

Example of unit of mass?

Answer 8

kilogram

Question 9

Formula of force?

Answer 9

Force (weight) = mass (m) x gravitational acceleration (g)

Question 10

Is it true that forces occur in pairs?

Answer 10

True

Question 11

How does force affect objects?

Answer 11

Change in size and shape
Change in motion
Change in direction

Question 12

There are different types of forces acting on objects all the time. Forces may be classified as a _______ or ________ force.

Answer 12

contact
noncontact

Question 13

Is it true that contact forces are more commonly seen and observed?

Answer 13

True

Question 14

There is a force that opposes motion. It is called _______.

Answer 14

friction

Question 15

Example of a contact force.

Answer 15

friction

Question 16

Does friction also produce heat?

Answer 16

Yes

Question 17

How do you manage friction?

Answer 17

By using rollers or wheels, you reduce the surface in contact to effectively reduce friction.

Using lubricants such as oil, wax, grease and powder allow moving surfaces to slide smoothly over one another.

Question 18

True or False: Smooth surfaces produce less friction, while rough surfaces produce more.

Answer 18

True

Question 19

Is a type of force that acts on objects without touching them?

Answer 19

noncontact force

Question 20

Examples of noncontact force?

Answer 20

gravity and magnetism

Question 21

Is a force that pulls objects toward the center of the Earth. It is an attractive force.

Answer 21

Gravity

Question 22

Is a noncontact force that pulls like needles, nails, paper clips and even from a distance.

Answer 22

magnetic force

Question 23

Magnets come in different shapes and sizes. It has two poles, the ____ and _____.

Answer 23

north pole
south pole

Question 24

Is it true that opposite poles of two magnets attract while like poles repel?

Answer 24

True

Question 25

Objects that are attracted by a magnet are classified as __________.

Answer 25

magnetic materials

Question 26

Objects that are not attracted by a magnet are classified as ________.

Answer 26

nonmagnetic materials

Question 27

Is a type of magnets that keep their magnetism all the time.

Answer 27

permanent magnets

Question 28

Is a type of magnets that work only when electricity is passed through them.

Answer 28

temporary magnets