Energy & Collisions
An object moving fast has more ______ energy than an object moving slowly.
kinetic energy (motion)
Light bouncing off a mirror is called ______.
Reflection
The highest point of a wave is called the ______.
crest
What do we call organisms that make their own food?
producers
What is it called when rocks are broken into smaller pieces over time?
weathering
A rolling ball hits another ball and makes it move. What caused the second ball to start moving?
the collision / the push from the first ball
Light bending when it passes through water or glass is called ______.
Refraction
The distance between two crests is called ______.
wavelength
Animals that eat other animals and plants are called ______.
consumers
What is a fossil?
preserved remains or traces of a living thing from long ago
If a car speeds up, what happens to its kinetic energy?
it increases
DAILY DOUBLE
What type of material lets SOME light through but not all of it?
translucent
A wave that moves up and down is called a ______ wave.
transverse
What is the role of a decomposer in an ecosystem?
breaks down dead organisms and returns nutrients to the soil
What is the difference between weathering and erosion?
weathering breaks rocks down, erosion moves them
Two objects are moving, but one is heavier. Which one could have more motion energy and why?
the heavier one, because mass also affects motion energy
Which lens makes objects look bigger: concave or convex?
Convex
If a wave has a bigger amplitude, what happens to its energy?
It has more energy
Where does ALL energy in a food web originally come from?
the sun
What natural events help shape Earth’s surface over time? (name at least one)
earthquakes, volcanoes, erosion, deposition
Why does a faster object cause a bigger change during a collision than a slower object?
Why does a straw look bent in a glass of water?
light is refracting (bending) as it moves through water
What type of wave moves back and forth (like a slinky pushed and pulled)?
longitudinal wave
What happens to an ecosystem if one organism is removed from a food web?
it can affect other organisms and make the ecosystem less stable
DAILY DOUBLE
Give one example of how humans can change the land and explain what effect it has.
building houses → removes habitats
farming → can help grow food but may affect soil
dams → change water flow