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100

What tiny particle makes up all matter?

Atom

100

What is the distance between two wave crests called?

Wavelength

100

What star do all the planets orbit?

The sun

100

Which layer of Earth has the hottest temperatures?

Inner core

100

In what part of a plant does photosynthesis mainly happen?

Leaves

100

What type of organism makes its own food?

Producer

100

Which type of heat transfer happens when you feel the warmth from the Sun on your face?

Radiation

200

Name the physical change that occurs when a solid turns into a liquid.  

Melting

200

Which wave can travel through empty space without a medium?

Light waves

200

How long does it take Earth to orbit the Sun once?

365 days or 1 year

200

What causes tectonic plates to move?

Convection currents in the mantle

200

What is it called when a plant grows toward light?

Phototropism

200

Water is an example of a (biotic/abiotic) factor in an ecosystem.

Abiotic or non-living

200

Which process changes a liquid into a gas?

Evaporation

300

What is one way to make sugar dissolve faster in water?

Stirring, heating the water, use smaller sugar crystals. 

300

What happens to pitch when the frequency of a sound wave increases?

The pitch gets higher.
300

In which moon phase does a lunar eclipse occur?

New moon

300

What is the difference between weathering and erosion?

Weathering breaks down rocks, erosion moves them

300

What is the main purpose of cellular respiration?

To convert glucose into useable energy

300

What happens to energy as it moves up a food chain?

Energy decreases 

300

What state of matter has a definite volume but no definite shape?

Liquid

400

As the temperature of a material increases, what happens to the motion of its particles?

Particles move faster

400

Which travels faster in a vacuum: sound waves or light waves?

Light waves
400

Why does Earth have seasons?

The tilt of the Earth

400

What type of boundary causes earthquakes from sliding plates?

Transform boundary

400

How does cellular respiration relate to photosynthesis?

Respiration breaks down food; photosynthesis makes food

400

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.

400

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 

500

When two objects at different temperatures touch, which direction does heat flow?

From warmer to cooler object

500

What material is used around wires to stop electric shocks?

Rubber insulators

500

What force keeps planets orbiting the Sun and is responsible for causing tides on Earth?

Gravity

500

Why is using compost and rotating crops good farming practices?

It helps add and keep nutrients that plants need in the soil 

500

In what organelle does respiration occur?

Mitochondria 

500

What level consumer is a hawk that eats snakes that eat mice?

Tertiary consumer

500

Which of the following would be the best insulator? 

Copper, styrofoam, or aluminum? 

Styrofoam

600

What kind of circuit keeps bulbs lit even if one burns out?

Parallel circuit

600

What is the measure of how much energy a wave has?

Amplitude

600

What event marked the U.S. winning the space race?

Landing a man on the moon

600

How are sedimentary rocks different from igneous rocks?

Sedimentary rocks form from compacted sediments; igneous rocks form from cooled magma or lava

600

Write the equation for photosynthesis.

H2O + CO2 + light ------> C6H12O6 + O2

600

Which biome is warm and rainy year-round?

Tropical rainforest

600

What happens to the density of a substance when the molecules are heated?

The density decreased because the molecules spread farther apart.