⚛️What's the Matter?
What tiny particle makes up all matter?
Atom
What is the distance between two wave crests called?
Wavelength
What star do all the planets orbit?
The sun
Which layer of Earth has the hottest temperatures?
Inner core
In what part of a plant does photosynthesis mainly happen?
Leaves
What type of organism makes its own food?
Producer
Which type of heat transfer happens when you feel the warmth from the Sun on your face?
Radiation
Name the physical change that occurs when a solid turns into a liquid.
Melting
Which wave can travel through empty space without a medium?
Light waves
How long does it take Earth to orbit the Sun once?
365 days or 1 year
What causes tectonic plates to move?
Convection currents in the mantle
What is it called when a plant grows toward light?
Phototropism
Water is an example of a (biotic/abiotic) factor in an ecosystem.
Abiotic or non-living
Which process changes a liquid into a gas?
Evaporation
What is one way to make sugar dissolve faster in water?
Stirring, heating the water, use smaller sugar crystals.
What happens to pitch when the frequency of a sound wave increases?
In which moon phase does a lunar eclipse occur?
Full moon
What is the difference between weathering and erosion?
Weathering breaks down rocks, erosion moves them
What is the main purpose of cellular respiration?
To convert glucose into useable energy
What happens to energy as it moves up a food chain?
Energy decreases
What state of matter has a definite volume but no definite shape?
Liquid
As the temperature of a material increases, what happens to the motion of its particles?
Particles move faster
Which travels faster in a vacuum: sound waves or light waves?
Why does Earth have seasons?
The tilt of the Earth
What type of boundary causes earthquakes from sliding plates?
Transform boundary
How does cellular respiration relate to photosynthesis?
Respiration breaks down food; photosynthesis makes food
What happens if a top predator is removed from an ecosystem?
Ex: hawk ---> snake ---> rat ----> seeds
What would happen to the snake population if the top predator was removed?
The snake population would increase.
On a sunny day at the beach you feel a gentle breeze due to hot air over land rising and cooler air over water sinking. This is due to which process?
Convection
When two objects at different temperatures touch, which direction does heat flow?
From warmer to cooler object
What material is used around wires to stop electric shocks?
Rubber insulators
What force keeps planets orbiting the Sun and is responsible for causing tides on Earth?
Gravity
Why is using compost and rotating crops good farming practices?
It helps add and keep nutrients that plants need in the soil
In what organelle does respiration occur?
Mitochondria
What level consumer is a hawk that eats snakes that eat mice?
Tertiary consumer
Which of the following would be the best insulator?
Copper, styrofoam, or aluminum?
Styrofoam
What kind of circuit keeps bulbs lit even if one burns out?
Parallel circuit
What is the measure of how much energy a wave has?
Amplitude
What event marked the U.S. winning the space race?
Landing a man on the moon
How are sedimentary rocks different from igneous rocks?
Sedimentary rocks form from compacted sediments; igneous rocks form from cooled magma or lava
Write the equation for photosynthesis.
H2O + CO2 + light ------> C6H12O6 + O2
Which biome is warm and rainy year-round?
Tropical rainforest
What happens to the density of a substance when the molecules are heated?
The density decreased because the molecules spread farther apart.