Chapter 3: keywords & definitions!

Question 1

Gravity

Answer 1

a force between 2 objects due to their mass & size

Question 2

Gravitational force

Answer 2

the gravity interacts with every object & pulls them towards a planet or the like

Question 3

Force

Answer 3

a push or a pull that happens between 2 things

Question 4

Newton

Answer 4

the unit of a force

Question 5

Newton meter

Answer 5

helps measure the force

Question 6

Speed

Answer 6

a measure of how fast an object moves

Question 7

Average speed

Answer 7

the speed over a certain amount of time

Question 8

Hydroskeleton

Answer 8

made out of water

Question 9

Exoskeleton

Answer 9

skeleton on the outside of the body

Question 10

Endoskeleton

Answer 10

skeleton on the inside of the body

Question 11

Hard bone

Answer 11

makes bones stronger

Question 12

Cartilage

Answer 12

makes bones more flexible

Question 13

Joint

Answer 13

is a place where two bones meet. This is also the place where your skeleton can move.

Question 14

Fixed

Answer 14

no movement, skull

Question 15

Ball and socket

Answer 15

movement in all directions, hip/shoulder

Question 16

Hinge

Answer 16

movement in 1 direction, elbow/knee

Question 17

Pivot

Answer 17

turning movement, radius+ulna/neck

Question 18

Gliding

Answer 18

glide over each other, wrist/ankle/backbone

Question 19

Ligaments

Answer 19

connect bone to bone

Question 20

Tendon

Answer 20

connect bone to muscle

Question 21

Synovial joint

Answer 21

ball and socket, hinge, pivot. Also have synovial fluid to oil the joint