What part of the cell directs the cell's activities?
What is the nucleus?
100
What kind of energy is used to make most of the world's food?
What is sunlight?
100
Which group of planets have colder temperatures - the inner or outer planets?
What is the outer planets?
100
What is the difference between physical and chemical changes?
What is physical changes DO NOT change the identity of substances and chemical changes DO change the identity of substances.
100
Carla threw a baseball high into the air. What force caused it to fall back to the ground?
What is gravity?
200
Which of these structures is found in plant cells but not animal cells?
Chromosome
Cell Membrane
Vacuole
Chloroplast
What is chloroplast?
200
What type of symbiotic relationship is when one organism is harmed and the other is unaffected?
What is commensalism?
200
Ms. Isaacs asked her students to identify certain constellations as a homework assignment. What would her students need to complete the assignment?
What is a star chart/map?
200
Mrs. Hall used a machine in her kitchen to remove energy from a small amount of water until it changed from a liquid to a solid. What process changed the state of water?
What is freezing?
200
What causes objects with the same mass to hit the ground at different times? (Hint: flat paper and waded up paper)
What is air resistance because of surface area?
300
What is the name of the gel that surrounds the organelles in plant and animal cells?
What is cytoplasm?
300
The relationship between all food chains in an ecosystem is called ______________?
What is a food web?
300
Where do earthquakes occur?
What is transform boundaries?
300
When substances melt and evaporate, they are _________ energy.
What is gaining?
300
What would happen if you dropped two different objects with different masses, shapes, and sizes on the moon?
What is they would hit the ground at the same time no matter what because of no air, which means no air resistance?
400
Which of the following is an example of a learned behavior?
Swallowing
Breathing
Blinking
Walking
What is walking?
400
What do arrows represent in food chains and food webs?
What is the flow of energy between organisms?
400
Jupiter's outer layers are mostly made of ______________.
What is gas?
400
What are the different charges of protons, neutrons, and electrons?
What is protons are positive, neutrons are neutral, and electrons are negative?
400
Explain action and reaction forces.
What is action force is the first force in a pair and reaction force is the second force in a pair.
500
Through which process do offspring receive DNA from both parents?
What is reproduction?
500
How do plants and animals get energy?
What is plants receive energy from the sun. Animals receive energy from eating plants or other animals.
500
Describe a land breeze and sea breeze.
What is sea-breeze is from sea to land. Land-breeze is from land to sea.
500
Describe the difference between potential and kinetic energy and give an example of each.
What is potential energy is stored energy (stretched rubber band). Kinetic energy is moving energy (kicked soccer ball).
500
Describe the difference between balanced and unbalanced forces?
What is balanced does not cause motion? Unbalanced causes motion.