Science

Question 1

Yes or Not: “The astronauts have no weight at all in space.

Answer 1

Yes, they do

Question 2

Why do astronauts seem to float in space?

Answer 2

Because their spacecrfat is moving along with them

Question 3

Is a push or pull that acts on an object?

Answer 3

Force

Question 4

Every force has a _______________

Answer 4

Strength or magnitud

Question 5

What is the measure for the strenght?

Answer 5

Unit called newtons (N)

Question 6

What is the Force?

Answer 6

Is a push or pull that acts on an object.

Question 7

A force has a _______________

Answer 7

Direction

Question 8

Can the forces change the way objects move?

Answer 8

Yes

Question 9

What its the CONTACT FORCES?

Answer 9

A force that requires two piece of matter to touch

Question 10

What is the FRICTION?

Answer 10

Is the force that result when two materials rub against each other or when their contyact prevents sliding.

Question 11

Is the force that result when two materials rub against each other or when their contyact prevents sliding?

Answer 11

Is the Friction

Question 12

What does the amount of friction between 2 objects depend on?

Answer 12

May depend of texture, shape, speed, and weight

Question 13

Solids are not the only materials that can cause friction. The ___________and__________also resist motion an object pushes against them.

Answer 13

Air and water

Question 14

What help that submarines and ship reduce friction and move through water easily?

Answer 14

Yor design, because your shapes help them

Question 15

Is the force that acts at a distance into two or more objects?

Answer 15

Non contact forces

Question 16

Give me exmaple for the non contac forces

Answer 16

Gravity, electricity forces and magnetics forces

Question 17

Is the forces of attraction between any objects?

Answer 17

Gravity

Question 18

How act the electric forces?

Answer 18

Act between objects that are electrically charged

Question 19

Magnets will pull strongly on objects made of:

Answer 19

Metals such, as iron, cobalt, and nickel.

Question 20

The magnets has two poles. What is the name?

Answer 20

North pole and South pole?

Question 21

Is the rate at which the speed or the direction of motion of an object changes over time?

Answer 21

ACCELERATION

Question 22

When we speak in accleration we refer only faster and faster?

Answer 22

No, in science the word acceleration means any change in motion.

Question 23

Motion without acceleration is called________________

Answer 23

Uniform motion

Question 24

What is the mean UNIFORM motion?

Answer 24

This word tell us that the motion no changed.

Question 25

What say the Newton's first law?

Answer 25

That an object will stay in uniform motion unless a net force acts on the object.

Question 26

Is the tendency of an object to resist any change in motion?

Answer 26

Inertia

Question 27

True or false: Objects with lot of mass have LESS inertia that objects with less mass?

Answer 27

False, the objects with more mass have a MORE intertia.

Question 28

The second law describe how acceleration, mass and force are related.

Answer 28

FORCE is product of mass and acceleration.

Question 29

What is the formule that describe the relation betwenee Force, mass and acceleration

Answer 29

Force= Mass x Acceleration ( F= m x a)

Question 30

Is the unit of force in the metric system?

Answer 30

newton (N)

Question 31

Newton's third law of motion states that when one object exerts a force on a second object, the seconf object exerts a force on the first. Give me a exmple

Answer 31

1.

Question 32

Newton's first law say that...

Answer 32

An object stay in uniform motion unless a net force acts on the object

Question 33

Newton's second law say that...

Answer 33

Describe how acceleration, mass and force are related

Question 34

Newton's third law say that...

Answer 34

Describe when a object exerts a force on a second, the second object exerts on the first object

Question 35

What happen when two people combine their forces?

Answer 35

This combined force can have a bigger effect.

Question 36

What happen when two forces of equal strenght combine to act on the same object, but in opposite directions?

Answer 36

The force are the BALANCED

Question 37

Is when an area of partial darkness where ligt has been blocked by an object?

Answer 37

SHADOW