Going in Circles
a vehicle with only one wheel
unicycle
a weight that hangs from a fixed point and swings back and forth
pendulum
to move something from one place, person, or thing to another
transfer
the physical features of a piece of land, including its shape, like whether it is flat, hilly, or mountainous
terrain
relates to heat
thermal
a person who travels to space in a rocket or spacecraft
astronaut
something is normal, usual, or not special
a half of a circle
semicircle
someone or something that relies on another person or thing for support
dependent
something that is between two or more states, like a road that connects them
interstate
something that is living or growing in water (like a fish or seaweed) or is done in or on water
aquatic
a tool used to measure how hot or cold something is
thermometer
a device that lets you talk to someone far away by sending your voice as electronic signals through wires or radio waves
telephone
a member of a community, like a town, state, or country, who has both rights and responsibilities
citizen
turning old, used materials into new products
recycle
having the same amount, size, or value as something else
equal
for two things to cross or meet at one or more points
intersect
a piece of land or an area that belongs to or is controlled by a government, person, or animal
territory
the total distance around the outside of a 2D shape
perimeter
the study of everything in space beyond Earth, including stars, planets, moons, and galaxies
astronomy
to work together smoothly to get something done
coordinate
a giant, swirling storm with powerful winds that form over warm ocean water
cyclone
an imaginary line around the middle of the Earth that divides our planet into two halves: the Northern Hemisphere and the Southern Hemisphere
equator
to get in the way of something or someone
interfere
a mini garden or a container for small animals, like a tiny world inside a clear glass or plastic box
terrarium
a device that keeps the temperature just right by automatically turning on the heat when you're cold and turning on the air conditioning when you're hot
thermostat
a tool that uses lenses and/or mirrors to help us see objects that are very far away by making them look bigger and brighter
telescope
something is not important or very small
insignificant
a complete, closed path that electricity follows
circuit
a shape has all its sides equal in length
equilateral
when doctors give a person donated blood through a small tube in their arm to help them when their body has lost too much blood or isn't making enough healthy blood
a beautiful, light blue-green gemstone that looks like the color of the sea
aquamarine
something is the same on both sides, like a mirror image, and can be divided into two parts that match perfectly when folded in half
symmetrical
a meeting where people in different places talk to each other using a phone or a computer
teleconference
something that happens twice a year, or about every six months
semiannual