Organisms-Revision

Question 1

What does respiration produce?

Answer 1

Respiration produces carbon dioxide.

Question 2

What is it called when you take in oxygen and breathe out carbon dioxide?

Answer 2

Gas exchange

Question 3

What is another name for the air sac?

Answer 3

The alveolus

Question 4

How much carbon dioxide do we breathe in?

Answer 4

0.04%

Question 5

Name three different forces.

Answer 5

Any three from:

Friction, drag, air resistance, water resistance, tension, spring, gravitational force.

Question 6

The larger the masses, the larger the …………….. between them.

Answer 6

Gravitational force.

Question 7

What does Newton’s first law of motion state.

Answer 7

Objects with balanced forces acting on them will stay at rest or stay in constant motion. (Equilibrium)

Question 8

What does friction do?

Answer 8

Friction opposes motion.

Question 9

What will happen if a resultant force is not zero?

Answer 9

A moving object will speed up or slow down depending on the resultant force’s direction.