Science

Question 1

What is Gravity?

Answer 1

A non-contact force that gives an object’s weight

Question 2

What is Force?

Answer 2

a push, pull or twist in a particular way.

Question 3

What’s Mass?

Answer 3

how much matter is inside of you.

Question 4

What’s unbalanced forces?

Answer 4

Can change an object motion.

Question 5

What’s a balanced force?

Answer 5

Don’t cause a change in an object’s motion.

Question 6

What is air resistance?

Answer 6

is the opposing force to gravity.

Question 7

What is friction?

Answer 7

is a contact force.

Question 8

What is weight?

Answer 8

measure of the pull of gravity on your mass

Question 9

What is Newton’s 1st law of motion?

Answer 9

an object at rest will remain at rest unless acted upon by an external unbalanced.

Question 10

Sinking?

Answer 10

objects that sink push on a liquid.

Question 11

Floating?

Answer 11

If the buoyancy exceeds the weight, then the object floats.

Question 12

Neutral buoyancy?

Answer 12

If the buoyancy equals the weight, the object has neutral buoyancy.

Question 13

What is Density?

Answer 13

is how much mass a substance has in a given space.

Question 14

What is a lever?

Answer 14

is a simple machine that uses the turning effect of a force to make a task easier.

Question 15

What is a Fulcrum?

Answer 15

The turning point of a lever.

Question 16

What is a Load?

Answer 16

The resistance to motion that a lever works against

Question 17

What is an effort?

Answer 17

The force required to cause movement.

Question 18

1st order lever?

Answer 18

EFL- Has the fulcrum in the middle

Question 19

2nd order lever?

Answer 19

ELF- Has the load in the middle

Question 20

3rd order lever?

Answer 20

FEL- Has the effort in the middle

Question 21

Buoyancy?

Question 22

An example for 1st class levers

Answer 22

Hammer removing nail, opening a tin with a spoon and scissors cutting paper.

Question 23

An example for 2nd class levers

Answer 23

Wheelbarrow, stapler and nutcracker.

Question 24

An example for 3rd class levers

Answer 24

Sweeping the floor, tweezers, tongs and staplers.

Question 25

True or false: Is friction bad?

Answer 25

Trick question! True: Friction can be good and bad

Question 26

Will you get an A??

Answer 26

NOOOO!!!!!!!! :)))

Question 27

What is magnetism?

Answer 27

a non- contact force