Physics
Who described gravity in 1665?
What was the name of the event that began the universe and how long ago did it occur?
The Big Bang and it happened 13.8 billion years ago.
Prokaryote
In ecosystems, what is the name of the organism at the top of the food chain?
Apex Predator
Where did life begin on Earth?
The deep sea
What does Newton's 3rd Law of Motion say?
For every action there is an equal and opposite reaction.
Name the planets in order.
M, V, E, M, J, S, U, N
What is the term for a cell that has a nucleus?
Eukaryote
What type of organism are you if you can make your food?
producer or autotroph
What is condensation and where do we see it in the water cycle?
Condensation is a gas converting to a liquid and occurs during the forming of clouds.
What happens when a force is applied to a resting object or an object in motion?
There is a change to the object.
Order the following in terms of size starting with the smallest: a galaxy, a planet, a star, a moon, a comet and the universe.
comet, moon, planet, star, galaxy, universe
What is the permeable structure that encircles all cells?
the cell membrane or plasma membrane
What is the term for an organism that only eats herbivores?
carnivore, consumer or secondary consumer
Why do we have a day and night on Earth?
Day and night results from the Earth's rotation.
A 500 N girl standing on a dock exerts a force of 100 N on a sailboat as she pushes it away from the dock. Describe the amount of force that the sailboat exerts on the girl.
100 N
Where are stars born and how does it occur?
Stars are born inside giant clouds of gas and dust called nebulae. The dust begins to clump because of gravity and continues until a star is born.
What organelle provides cells with energy?
What happens to dead organic material in ecosystems?
Dead organic material is decomposed by decomposers and is recycled into the environment.
Explain the difference between a solar eclipse and a lunar eclipse.
A solar eclipse occurs when the moon blocks the sun from reaching Earth. A lunar eclipse is when Earth blocks sunlight from reaching the moon.
A 120 N force was applied to an object with a mass of 12 kg. This resulted in the object accelerating at 10m/s2. What 2 changes could we make to the object that would require a stronger force?
An increase in the mass or acceleration of the object.
Explain a light year?
5.88 trillion miles
What are the terms for organisms made of 1 cell and organisms made of many cells?
unicellular and multicellular
Two animals eat fish. Explain what would make these animals compete for fish and what would allow them not to compete.
The fish have to be the same species to compete.
What are the 2 reasons that there are seasons on Earth?
Because of Earth's orbit around the sun and because of Earth's tilt.