Biology
What is the function of red blood cells?
They transport oxygen around the body
Name one sign of a chemical reaction
color change, gas production, temperature change or formation of a precipitate
What are the primary colors of light?
Red, green and blue
What gas contributes the most to the human caused greenhouse effect
Carbon dioxide (Co2)
What is the difference between an organ and an organ system
An organ is made of tissues with a specific function, while an organ system is a group of organs working together
Why does a candle become shorter when it burns?
The wax reacts with the oxygen in a chemical reaction and changes into gases like co2 and water vapor
If you shine a flashlight at a mirror what happens to the light?
It reflects back
How can cutting down forests affect climate change?
Fewer trees means less co2 is absorbed, which increases the greenhouse effect
Why do plants need specialized cells?
specialized cells allow different functions efficiently, such as transport and photosynthesis
Explain why safety goggles are important in a chemistry lab
They protect they eyes from chemicals and heat or any other accident that could fortake in the lab
Why does a spoon look bent in a glass of water?
Because light moves from water to air (refraction)
Explain the greenhouse effect in your own words.
Greenhouse gasses like co2 trap heat in the atmosphere and keep earth warm enough for life, but too many greenhouse gasses causes global warming and climate change
A person has trouble breathing after running. Which body system is working harder?
The respiratory system
Why does rust form faster in wet environments?
Water helps iron react with oxygen more quickly, speeding up rust formation
How would you explain the difference between reflection and refraction to a younger student?
reflection is when light bounces back, while refraction is when light changes direction
How can people reduce their impact on climate change?
By using less energy, recycling, taking public transport and using renewable energy
Describe how the digestive system helps the body
It breaks down food into nutrients the body can use for energy and growth
You mix vinegar and baking soda and see bubbles. What does this show?
It shows that a chemical reaction is happening and gas is being produced
Why do bicycle reflectors use reflectors use reflection of light
So car headlights can hit them and make the cyclist more visible in the dark
What could happen to sea levels if earth's temperature increases?
Sea levels would rise because ice melts and warm water expands