Term 1
Homeostasis & Thermoregulation
Homeostasis & Thermoregulation
Homeostasis means:
A. Keeping the body the same shape
B. Keeping internal conditions stable
C. Keeping blood moving
D. Keeping the skin warm
B. Keeping internal conditions stable
Which gas is used in photosynthesis?
A. Oxygen
B. Nitrogen
C. Carbon dioxide
D. Hydrogen
C. Carbon dioxide
Heat always moves from:
A. Cold to hot
B. Hot to cold
C. Big to small
D. Day to night
B. Hot to cold
Which particles are found in the nucleus?
Protons and neutrons
How many bones does a human adult have?
A. 50
B. 168
C. 206
D. 211
C. 206
What happens when you get too hot?
A. Your body shivers
B. Your body sweats
C. Your heart stops
D. Your blood gets thicker
B. Your body sweats
Which process adds carbon dioxide to the air?
A. Photosynthesis
B. Respiration
C. Sleeping
D. Melting
B. Respiration
You leave an ice block in the sun and it melts in minutes.
Is this a physical or chemical change?
Physical change.
An isotope has:
A. Different numbers of protons
B. Different numbers of neutrons
C. No electrons
D. No nucleus
B. Different numbers of neutrons
Your phone heats up when you’re gaming for too long.
What type of energy is being produced inside the phone?
Heat/thermal energy.
What level of structural organisation comes after cells?
Tissues.
Name the 4 Earth spheres.
Atmosphere, Hydrosphere, Biosphere/Lithosphere, Geosphere.
Which is a good insulator?
A. Metal
B. Wood
C. Aluminium
D. Steel
B. Wood
What is released in alpha decay?
Answer: 2 protons + 2 neutrons
What percentage of Earth is covered in water?
A. 10%
B. 40%
C. 71%
D. 95%
C. 71%
Which body system is responsible for transporting oxygen around the body?
The circulatory system.
How does burning fossil fuels disrupt the carbon cycle?
Releases stored carbon quickly → increases atmospheric CO₂ → enhances greenhouse effect.
You hear thunder seconds after seeing lightning. Why?
Sound travels slower than light.
A Radon-222 atom undergoes alpha decay.
What are the new atomic number and new mass number?
Radon atomic number: 86
Alpha particle removes: 2 protons + 2 neutrons
• New atomic number: 84
• New mass number: 218
Do Identical have the same fingerprints?
No
Even identical twins have different fingerprints. The patterns are influenced by tiny differences in how their fingers press and grow in the womb.