Body Basics 4th Grade

Question 1

Name 3 things blood carries to muscle cells so they can make energy.

Answer 1

Water, oxygen, nutrients

Question 2

When you exercise does your heart beat faster or slower?

Answer 2

Faster

Question 3

You checked your pulse for 15 seconds and counted 20 throbs. How fast is your heart beating per minute (heart rate)

Answer 3

15 seconds x 4 =1 minute (60 seconds)

So, 20 throbs x 4 = 80 beats per minute

Question 4

Which gas enters your body when you inhale?

Answer 4

Oxygen (O2)

Question 5

Which gas exits your body when you exhale?

Answer 5

Carbon Dioxide (CO2)

Question 6

The main organs of the respiratory system are

Answer 6

Nostrils, Mouth and Lungs

Question 7

What does the digestive system do for the body?

Answer 7

Breaks down food into nutrients the body can use.

Question 8

The mineral in bones that makes them strong is…

Answer 8

Calcium

Question 9

Many foods that are best for strengthening bones come from which food group?

Answer 9

Milk and dairy

Question 10

What 3 things do muscle cells need to produce energy for movements?

Answer 10

Water, oxygen, nutrients

Question 11

The more active you are the (more/less) energy you use?

Answer 11

More active = more energy

Question 12

True or false?

Humans are multicellular organisms?

Answer 12

True, humans are made of LOTS and LOTS of different kinds of cells.

Question 13

Cells work together to form …

Answer 13

Tissues

Question 14

Tissues work together to form …

Answer 14

Organs

Question 15

Organs work together to form …

Answer 15

A System