Human body
What organ pumps blood around your body?
Heart
Ice melting into water is an example of what kind of change?
Melting
is rabbit a producer or consumer?
A rabbit is usually this type of consumer.
This type of rock is formed when lava cools.
Igneous rock
Which planet is known as the Red Planet?
Mars
Name the gas your lungs take in when you breathe
Oxygen
Is ice melting into water reversible change or not?
Yes
What do we call animals that eat only plants?
Herbivores
Which rock type often contains fossils?
Sedimentary rock
What force pulls objects toward Earth?
Gravity
What is the scientific name for the tube that carries food from your mouth to your stomach?
Oesophagus
Which material is magnetic: plastic, glass, or iron?
Iron
In a food chain, plants are always the starting point because they are called what?
Producers
Name the process by which rocks are broken down into smaller pieces by wind, rain, and ice.
Weathering
Which two parts of a plant are mainly responsible for photosynthesis?
leaves and stem
Explain how the small intestine helps with digestion and absorption of nutrients.
It breaks food down with enzymes and absorbs nutrients into the blood through villi.
When vinegar and baking soda are mixed, they fizz and make bubbles. What gas is produced in this reaction?
carbon dioxide (CO₂)
Explain the difference between a food chain and a food web.
A food chain shows one path of energy flow, while a food web shows many linked food chains.
What is the difference between intrusive and extrusive igneous rocks?
Intrusive: formed underground, cool slowly, large crystals. Extrusive: formed above ground, cool quickly, small crystals.
Why does the Moon appear to shine, even though it makes no light of its own?
Because it reflects light from the Sun.
The left side of the heart pumps blood that contains?
Oxygen
Why is copper used for electrical wires?
Because it is a good conductor of electricity and bends easily.
If foxes in a food web disappear, explain what might happen to rabbits and grass populations.
Rabbits would increase (no predator), and the grass would decrease (overgrazed).
Explain how the rock cycle shows that all rocks can eventually change from one type to another.
(1 example is enough)
Heat, pressure, melting, cooling, erosion, and deposition can turn igneous, sedimentary, and metamorphic rocks into each other over time.
Particles are very close together, in a fixed arrangement, only vibrating.
Solid