Chemistry
How do the atoms in a gas move?
Page 15, #3
All over the place, not contained at all!
What is a force
Page 17, Question #19
A push or a pull
What is a major difference between plant and animal cells?
P. 19, #48
Plant cells have chloroplasts for collecting sunlight and they also have cell walls for structure, and animal cells don't
What is the difference between weather and climate?
Page 21, #65
Weather is short term while climate is large patterns of the atmosphere
How many times does the Earth orbit the sun over a period of 10 years
P. 21, #69
10 times
Explain what would need to happen to change an ice cube into water and then a gas. What is the name of each process
Page 15, Question #4
Melting - heat the ice into liquid
Evaporation - continue heating into a gas
What is gravity?
Page 17, Question #26
The force of attraction between any objects with mass
Due to pollution, there are some trees that got darker. There are moths that live on the trees. Over time, what do you think will happen to the moths.
P. 19, #47
The population will become darker because all of the light colored moths will get eaten
Why are plants called producers?
Page 20, #55
They make their own food through photosynthesis
Draw a picture of the position of the Earth, Moon, and Sun in a solar eclipse
P. 21, #70
Sun Moon Earth
Aluminum has a density of 2.7g/cm3. Will it float or sink in water?
The density of water is 1.0g/cm3
Page 16, Question #15
It will sink because it is more dense than water
When an object tends to stay in motion or tends to stay at rest, what is that called?
Page 17, Question #24
Inertia or Newton's 1st Law
Which type of reproduction will result in a baby that is identical to the parent?
P. 19, #41
Asexual reproduction
When water vapor cools and turns back into liquid water, it is called what?
Page 20, #62
Condensation
Rocks that are formed from magma are called what?
P. 21, #73
Igneous rocks
Classify these as physical or chemical change:
1. Salt dissolving in water
2. Heating water and making it evaporate
3. Milk souring
4. Mixing a cake
5. Baking a cake
6. Tearing paper
7. Burning paper
8. Freezing water
9. Melting chocolate
Page 16, Question #17
1. P
2. P
3. C
4. P
5. C
6. P
7. C
8. P
9. P
If a car travels 150 miles in 3 hours, what is its speed?
Page 17, Question #23
50 mph
How are prokaryotic and eukaryotic cells different
P. 19, #49
Prokaryotes don't have a nucleus while eukaryotes do
What is a parasite? Give an example of a parasite-host relationship
P. 20, #57
A parasite is something that invades its host but doesn't kill it, and uses it to survive
Ex: A heartworm in your dog
Why is it summer when that hemisphere is tilted towards the sun?
Page 21, #67
Because the angle of sunlight is more direct, so it gets hotter
What do elements of the same group of the periodic table have in common?
Page 16, Question #18
They have the same number of electrons in their outer shells (valence electrons). OR they have the same charge
Which has more potential energy - an object 10 feet off the ground or 5 feet off the ground?
Page 18, Question #27
10 feet because it is higher up
Why do plants help stop global warming
p. 18, #39
They pull carbon dioxide out of the atmosphere, which is making Earth hotter
What is the equation for photosynthesis (what goes in and what goes out?)
Page 20 #50
Water + sunlight + carbon dioxide makes oxygen +glucose
Name the 3 types of plate boundaries and what can happen at each one
P. 21, #71
Convergent - the plates push together (mountains)
Divergent - the plates move apart (trenches)
Transform - the plates slide past each other (earthquakes)