Cells & Immune System
What kind of cell has a cell wall?
Plant cell (or bacteria)
What is the name of Earth's layer that we walk on?
Crust
How could you describe the wavelengths of gamma rays?
Shortest
What is the shape of an electron?
Round
What is the definition of mass?
The simple definition of mass is the quantity of matter within a given object.
This organelle is known as the "powerhouse" of the cell because it produces energy.
Mitochondria
How do earthquakes happen?
Friction between tectonic plates
What everyday devices give off low radiation?
Phones
Do electrons in atoms move?
Yes, very quickly
What is density?
The formula for density is d = M/V, where d is density, M is mass, and V is volume.
What kind of cell is the key player in your immune system fighting infection?
White blood cells
How many layers does the Earth have?
Four
What are the lowest and highest points of waves called?
Troughs and crests
Are two atoms of the same element identical?
Mostly, but there can be small differences (number of neutrons, electron states)
Is the density of a brick closer to 0.2, 2, 20, or 2000 g/mL?
Close to 2000 g/mL
When they're in a host cell
~5200 C or 9400 F
What's an example of an animal that can see in infrared
Snakes (other animals also could be accepted)
Are there chemical reactions happening in our bodies?
Yes, all the time!
How to measure the volume of a cube?
Length x Width x Height
What immune cell helps the healing of open wounds?
platelets
Approximately how thick is the Earth's mantle?
~ 2900 km/1800 mi
What is the most dangerous form of radiation?
Gamma rays
Why don't electrons in the atom enter the nucleus?
They're attracted to the positive charge of the protons in the nucleus, but the electrons repel each other's negative charges
A solid cylinder has a radius of 2 cm and a length of 7 cm. Its density is 3.1 g/cm³. What is the mass of the cylinder?
272.69 grams