Radioactivity
What type of radiation is stopped by paper?
Alpha radiation
What is the natural satellite of Earth?
Moon
What helps air enter the lungs by contracting/bending?
Diaphragm
What is the center of the solar system?
Sun
What part of the respiratory system is also called the windpipe?
Trachea
What instrument detects radiation?
Geiger-Müller tube
What force keeps planets in orbit around the Sun?
Gravity
What are the tiny air sacs in the lungs where gas exchange occurs?
Alveoli
Which planet has a prominent ring system?
Saturn
What type of radiation consists of high-energy electromagnetic waves?
Gamma rays
What term refers to the time it takes for half of a radioactive substance to decay?
Half life
What is the name of the galaxy that Earth belongs to?
Milky Way
What gas is released during respiration?
Carbon Dioxide
What is the name of the path Earth takes around the Sun?
Orbit
Which particles are helium nuclei?
Alpha particle
What is the SI unit for measuring radioactive activity?
Becquerel
What is the name of the first human to walk on the Moon?
Neil Armstrong
What pigment in red blood cells binds with oxygen?
Haemoglobin
Who was the first human in space?
Yuri Gagarin
What respiratory disease causes difficulty in breathing due to narrowed airways?
Asthma
Who discovered the elements polonium and radium?
Marie and Pierre Curie
What was the first artificial satellite launched into space?
Sputnik 1
What type of respiration occurs when no oxygen is available?
Anaerobic respiration
What is the term for exploding star at end of life cycle?
Supernova
Which organ system works with the respiratory system to transport gases?
Circulatory system