Dinosaurs
Dinosaurs and _____ did not exist at the same time
Humans.
After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth.
Everything you can touch is made out of _____
Matter.
All matter on Earth exists in the form of a solid, liquid, or gas, and that solids, liquids, and gases are all made of extremely tiny particles called atoms and molecules.
A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, object.
True or False
Everyone in this room is covered in germs.
True.
Germs live everywhere. You can find germs (microbes) in the air; on food, plants and animals; in the soil and water — and on just about every other surface, including your body. Most germs won't harm you.
The fastest growing organ is your ______
Skin.
Your skin is the largest and fastest growing organ in your body. It protects your internal organs, so it's important that you take care of your skin and find medical professionals who are knowledgeable in all aspects of skin care.
Fossils are evidence of what?
Ancient Life (ex. Dinosaurs, reptiles, birds, insects, or sealife)
Fossils provide important evidence for evolution and the adaptation of plants and animals to their environments. Fossil evidence provides a record of how creatures evolved and how this process can be represented by a 'tree of life', showing that all species are related to each other.
What are the three phases of matter?
Solid, liquid, and gas.
Regardless of the type of molecule, matter normally exists as either a solid, a liquid, or a gas. We call this property of matter the phase of the matter.
What is the fastest thing in the universe?
Light.
As far as we know, the fastest things in the universe are photons of light, closely followed by subatomic particles.
What system in your body protects you from disease or infection?
The immune system.
The immune system is a complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body's own cells. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognize and destroy the microbe quickly if it enters the body again.
Genes are part of _____ Molecules.
DNA.
Genes and chromosomes work together to make you who you are. Chromosomes carry DNA in cells. DNA is responsible for building and maintaining your human structure. Genes are segments of your DNA, which give you physical characteristics that make you unique.
One of the first steps to determine the age of a fossil is to measure the age of the surrounding ______
Area/Rocks.
Today, scientists use a variety of techniques to date rocks and fossils precisely. They measure the amounts of particular radioactive elements often radiocarbon or potassium, present to determine when a rock was formed, or when an animal or plant died.
True or False
Energy and atoms can change phases of matter
True.
Changing an object's phase of matter is just a matter (ha, ha) of adding energy to atoms or taking it away. Heating adds energy to atoms, and cooling takes energy away from atoms.
True or False
Is the Earth's rotation wobbly?
True.
It is commonly believed that the Earth is perfectly spherical in shape. But in reality, it is an oblate spheroid, with varied geographies contributing to the uneven distribution of mass on the surface of the Earth. Due to this uneven distribution, Earth wobble as it spins on its axis.
True or False
Can most germs that attack you make you sick?
False.
Most germs won't harm you. Your immune system protects you against infectious agents. However, some germs are difficult enemies because they're constantly mutating to breach your immune system's defenses. Knowing how germs work can increase your chances of avoiding infection.
What is the job of White Blood cells?
White blood cells are responsible for protecting your body from infection.
90% of every type of living thing that has ever been on this planet is now ______
Extinct.
More than 99% of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant.
Do atoms move faster in a solid or liquid?
solid.
The north star is sometimes called...
Polaris
Which cells can make your germs explode?
White Blood cells.
University researchers in Melbourne have captured a white blood cell as it dies, bubbles and explodes. It is the first time the process of cell death has been captured on film
Red blood cells turn red when when they carry _____
Oxygen.
Red blood cells deliver oxygen to the tissues in your body. Oxygen turns into energy and your tissues release carbon dioxide. Your red blood cells also transport carbon dioxide to your lungs for you to exhale.
When archaeopteryx fossil was found, they knew dinosaurs and ___ must be related.
Birds.
Birds belong to the theropod group of dinosaurs that included T. rex. Theropods are all bipedal and some of them share more bird-like features than others.
What can you use to change a liquid into gas?
Heat energy.
Vaporization is the process of converting a liquid into a gas. It is also called evaporation. Since we know that the particles of a gas are moving faster than those of a liquid, an input of energy must be required for a liquid to become a gas. The most common way to add energy to a liquid system is by adding heat.
How did eratosthenes discover the circumference of the earth
By studying shadows.
Our bodies find germs with special chemicals called ___________
Antibodies.
They recognize, mark, and eliminate foreign invaders such as bacteria and viruses, either alone or with other immune cells. The presence of antibodies in the blood indicates a recent or past infection. Antibody levels also indicate the strength of the immune response to an infection or autoimmune disease.
Yeast cells give off bubbles which contain _____________
Carbon Dioxide.
The bubbles of carbon dioxide rise to the top of whatever liquid the yeast is digesting, unless you have made a dough with a network of protein strands (gluten) to trap the bubbles.