When light shines on a white object what happens to most of the light?
It reflects or diffusely reflects off of it making it look bright
100
What does the law of conservation of matter state?
Matter cannot be created or destroyed so the mass of the products must equal the mass of the reactants.
100
Put these times in order from longest shadow to shortest shadow.
7 pm, 3pm, 12pm, 5pm
7 pm, 5 pm, 3 pm, 12pm
100
What do plants need to perform photosynthesis?
water, carbon dioxide, sunlight
100
How does water travel from the atmosphere to a lake?
Precipitation.
200
What type of object absorbs most of the light that hits it?
Dark colored objects
200
Name 2 properties you could use to tell substances apart.
Magnetism, Boiling/Melting point, solubility, color, texture,
200
Why do stars appear to move across the sky at night?
The rotation of the earth on its axis makes the sun and stars look like they are moving from east to west across the sky.
200
In the Chesapeake Bay there are both aquatic plants and terrestrial plants. Organisms like smelt feed on the aquatic plants for energy. Birds like gulls are predators of the smelt and rely on them for food for growth and energy. Ten years ago a law was passed that stopped human’s from fishing for smelt.
How will this law affect the gulls?
They will increase because there will be more smelt to eat.
200
Where does most water end up? Why?
Most water ends up at the ocean. Gravity causes the water to flow downhill to the lowest elevation which is sea level.
300
Most light that strikes a window will be _________________ because the window is __________________.
Most light that strikes a window will be transmitted because the window is transparent.
300
A student dissolves 1 gram of sugar in 10 grams of water. She then determines the mass of the solution. The mass of the dissolved sugar and water is ___________. Explain
The mass is 11g because the total mass of the reactants is 10 + 1 = 11g and that must equal the total mass of the products according to the law of conservation of mass.
300
Do all stars look the same at night? Explain
No, some stars look brighter because they are closer to Earth or are larger. Stars that are farther away will look dimmer.
300
Name 1 decompser, 1 consumer and 1 producer
Ms. Witt will check your response.
300
How does the shape of a rock changes after weathering and erosion?
It becomes smoother and smaller.
400
How do objects create shadows?
Objects block the path of light to the screen (ground).
400
If you could use a powerful microscope to see the particles in a gas, what would you see between the particles?
Empty space
400
It is 6am. Describe the location and size of your shadow.
The shadow will be long and on the West side.
400
What are three things organisms might compete for?
food, water, shelter, mates,
400
Read the sentences below and list identify each examples as weathering, erosion, or deposition.
A Wind blows across a field and picks up dust and small rocks.
B Sediment falls to the bottom of a lake or ocean.
C A boulder breaks apart because of a growing tree.
A - erosion
B - deposition
C- weathering
500
Ms. Witt’s cat was sitting on her bed. There were absolutely no lights on in the room. What would Ms. Witt's cat see when Ms. Witt walks into the room
Nothing!! There is no light so she cannot see
500
How do you measure mass of a liquid like water?
Measure the mass of an empty beaker then measure mass of the beaker and water. Then subtract the mass of the beaker to get just the water.
500
Why do you see different constellations during summer and winter?
When the Earth revolves around the sun it is facing out to different locations in space. This means you can see different stars.
500
How could pollution in the water affect an ecosystem?
it can kill plants or animals, it can block the sunlight from reaching the plants.
500
How is black sand created?
Black rocks weather from mountains and landforms and become sediment. Then the sediment erodes away down a river and is then deposited at the beach