Chemistry
Water droplets form as a result of which water property?
cohesion
Which objects in the list are experiencing unbalanced forces?
A train traveling at a constant speed
A cat jumping off a ledge
A plane sitting at the gate
A roller coaster accelerating down a hill
A balloon drifting upwards
A rock resting on the ground
A person walking at a steady pace
The cat, the roller coaster, & the balloon,
What is the main influence for different climates on Earth?
Uneven heating
What is the difference between primary and secondary succession?
Primary has no soil
Secondary HAS soil
What is the function of the cell membrane?
To let things in and out of the cell like a door.
Katie tested a mystery substance that was labeled corrosive and bitter. Was the substance an acid or a base?
acid
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction. Which of Newton’s Laws does this follow?
3rd Law
Which conditions allow hurricanes to grow in size and strength?
Warm ocean waters
A student wants to study primary succession by removing all the plants in a plot of irrigated farmland previously used to grow corn. Will their plan be successful?
No, the land still has soil.
Which type of cell has a large vacuole and chloroplasts?
Plant cell
Are mixtures chemically or physically combined?
physically
A force of 48.0 newtons pushes a 14.0-kilogram case of water bottles across the surface of a table. The force of friction between the case of water bottles and the table surface is 41.0N, as shown in the diagram. What is the acceleration?
0.5m/s2
When the Earth, Sun, and Moon form a right angle which type of tide is happening?
Neap tides
The frequency of dark fur has increased in a population of mice over time. Which environment MOST LIKELY led to this change?
An environment with less snowfall.
Which part of the plant cell is responsible for photosynthesis?
Chloroplasts
A student mixes 125 grams of sugar, 250 grams of water and 5 grams of flavoring. Howmuch would the products weigh?
380 grams
A ball rolls along a flat surface and slowly comes to a stop. What is happening the the velocity and friction?
Velocity decreases because of the friction.
How do fossils support the theory of plate tectonics?
There are the same fossils found on different continents.
Plants growing back after a wildfire is an example of which type of succession?
secondary
Which 2 body systems are responsible for movement?
skeletal and muscular
Use the periodic table to identify the elements in the chemical formula AgNO3 as well as the number of atoms for each element.
Silver - 1
Nitrogen - 1
Oxygen - 3
A student pushes a 51.5kg bookshelf across a smooth floor with a net force of 67N. What is the approximate acceleration of the bookshelf?
1.3m/s2
Alpha Centauri appears as a bright object visible in the Milky Way galaxy. Alpha Centauri is actually a system of three objects. Each object produces light and rotates on its own axis. The system is an average of 4-light years away from Earth. Based on this information what are the 3 objects?
Stars
Describe the difference between biotic and abiotic factors?
Biotic factors are living things and abiotic factors are non-living things
Plants can come in all shapes, sizes, and colors. Which cellular feature determines what a plant looks like?
information in the chromosomes within the nucleus.