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%