Biology
Chemistry
Earth
Physics
General knowledge
100

What is the animal at the top of the food chain called

Apex predator

100
What is the most abundant element in the universe

Hydrogen

100

What is the name used for the way water moves throughout the world

The water cycle

100

Can sound waves generate heat

Yes

100

Who discovered gravity

Isaac Newton

200

What is the name for an animal that hunts other animals for food

Heterotroph

200

What is the 8th element on the periodic table

Oxygen

200

What gas makes up 78% of the Earth's atmosphere

Nitrogen

200

Name 3 forces acting on you right now

Check individually

200

How many bones are in the human body

206

300

What are the two main parts of the CNS

Brain, Spinal cord

300

What are the element(s) that make up table salt

Chlorine and Sodium

300

How thick is the Earth's crust

15-20km

300

Does fire have a shadow

Yes
300

How much DNA do humans and chimpanzees share

98.8%

400
What is the function of the endocrine system

To regulate the release of hormones throughout the body

400

What type of element is krypton

Noble gas

400

What is the world's largest exporter of uranium

Khazakstan

400

How fast does a dropped object accelerate after being dropped

9.8m/s^2

400

How many vertebrae does the average human have

33

500

What is the synaptic cleft 

The space after the axon terminal of a neuron and the dendrites of another

500

In a saturated solution of ZN(OH)2 at25oC, the value of [OH-] is 2.0 x 10-6 M. What is the value of the solubility product constant, Ksp, for ZN(OH)2 at 25oC

4.0 x 10-18

500

Emerald, Red beryl, and heliodor are all part of which crystal family

Crystal beryl family

500

What's heavier, a pound of feathers, or a pound of steel

They're both a pound

500

What does DNA stand for

Deoxyribonucleic acid

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