Science KS3

Question 1

What are waves?

Answer 1

Waves are disturbances that transfer energy from one place to another without transferring matter.

Question 2

True or False: Sound waves are a type of mechanical wave.

Answer 2

True

Question 3

Fill in the blank: The __________ is the basic unit of life.

Answer 3

cell

Question 4

What is the function of the cell membrane?

Answer 4

The cell membrane controls what enters and leaves the cell.

Question 5

List the four main types of tissues in the human body.

Answer 5

Epithelial, connective, muscle, and nervous tissue.

Question 6

What is the role of the skeleton?

Answer 6

The skeleton provides structure, protects organs, and allows for movement.

Question 7

What are the main parts of the human skeleton?

Answer 7

Skull, spine, ribs, and limbs.

Question 8

True or False: The human body has 206 bones.

Answer 8

True

Question 9

What are the stages of human development before birth?

Answer 9

Fertilization, zygote, embryo, and fetus.

Question 10

What is fertilization?

Answer 10

Fertilization is the process where a sperm cell joins with an egg cell.

Question 11

Multiple Choice: Which part of the cell contains the genetic material? A) Cytoplasm B) Nucleus C) Cell membrane

Answer 11

B) Nucleus

Question 12

What is homeostasis?

Answer 12

Homeostasis is the maintenance of a stable internal environment in the body.

Question 13

Fill in the blank: The __________ system is responsible for transporting blood throughout the body.

Answer 13

circulatory

Question 14

What is the function of red blood cells?

Answer 14

Red blood cells carry oxygen from the lungs to the body and carbon dioxide from the body to the lungs.

Question 15

True or False: The heart has four chambers.

Answer 15

True

Question 16

What is the role of the nervous system?

Answer 16

The nervous system controls and coordinates body activities by transmitting signals.

Question 17

What are the three types of muscle tissue?

Answer 17

Skeletal, cardiac, and smooth muscle.

Question 18

Multiple Choice: Which type of wave does not require a medium? A) Sound waves B) Light waves C) Water waves

Answer 18

B) Light waves

Question 19

What are hormones?

Answer 19

Hormones are chemical messengers that regulate various functions in the body.

Question 20

Fill in the blank: The __________ system is responsible for producing hormones.

Answer 20

endocrine

Question 21

What is the purpose of the respiratory system?

Answer 21

The respiratory system is responsible for taking in oxygen and expelling carbon dioxide.

Question 22

True or False: The diaphragm is a muscle that aids in breathing.

Answer 22

True

Question 23

What is the main function of the digestive system?

Answer 23

The digestive system breaks down food into nutrients that the body can use.

Question 24

List the organs involved in the digestive system.

Answer 24

Mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas.

Question 25

What is the function of the kidneys?

Answer 25

The kidneys filter waste products from the blood and produce urine.

Question 26

Multiple Choice: Which part of the brain is responsible for coordination and balance? A) Cerebrum B) Cerebellum C) Brainstem

Answer 26

B) Cerebellum

Question 27

What is the role of antibodies?

Answer 27

Antibodies help the immune system identify and neutralize foreign objects like bacteria and viruses.