The Birds and the Bees
Atom Bomb
Power Surge
Under Pressure
David Attenborough
100
What are two ways that pollen can be spread?
Wind and insects
100
What is the average mass of a single electron?
Almost 0
100
Is photosynthesis an exothermic or an endothermic reaction?
Endothermic
100
What is the formula to calculate density?
density = mass / volume
100
What kind of organism is at the beginning of any food chain?
A producer
200
What are the male and female gametes called in humans?
Sperm and ovum (egg)
200
How many protons does an atom of cobalt have?
27
200
Double points!
Name an element that explodes when it touches cold water.
Potassium or Sodium
200
What method can we use to measure the density of an irregularly shaped object?
Displacement
200
About how much energy moves from one level of the food pyramid to the next?
About 10%
300
Draw a Punnett Square to show that the chance of a baby being male or female is both 50%.
300
Name at least three noble gases.
Helium, Neon, Argon, Krypton, Xenon
300
About how much of the sun's energy is used to drive wind and water currents on Earth?
About 1%
300
How does a knife work to increase the pressure?
It reduces the surface area while keeping the force the same, which makes the pressure much greater.
300
Double points!
What is the name of the mountain gorilla that David Attenborough met in 1978?
Poppy
400
What part of the flower releases the pollen?
Anther
400
Double points!
Draw and correctly label an atom of Helium.
400
What unit is used to measure resistance in a circuit?
Ohms Ω
400
You are trying to move a couch with a weight of 600 N. The area of the couch on the floor is 3m2. How much pressure is the couch putting on the floor?
600 N / 3m2 = 200 N/m2
400
What is the current atmospheric CO2 concentration?
409.8
500
Where in the female reproductive system does fertilization occur?
Fallopian tubes
500
Dj On the periodic table, what group are the halogens in?
Group 7
500
What happens to the rate of a reaction when the particle size decreases?
It speeds up.
500
Dj Label the three parts of this lever.
Effort, fulcrum/pivot, load
500
Of all the animals living on Earth, about what % are wildlife?
4%