Life Sciences
Which organelle releases energy during cellular respiration
Mitochondrion
The force that keeps planets orbiting the Sun is this.
Gravity
Rust forming on iron is an example of this type of change.
A chemical change
The distance from one wave crest to the next is called this.
Wavelength
An organism that makes its own food is called this.
A producer
A trait that helps an organism survive and reproduce is called this.
Adaptation
Ocean tides are mainly caused by the gravitational pull of the Moon and this object.
The sun
A reaction that releases heat energy is called this.
Exothermic reaction
The height of a wave is called this.
Amplitude
A hawk eating a mouse is an example of this ecological relationship.
Predator-prey
Random changes in DNA are called these.
Mutation
A lunar eclipse happens when this object is between the Sun and the Moon.
The Earth
Matter cannot be created or destroyed during a chemical reaction. This is called this law.
The law of conservation of mass
Increasing amplitude increases a wave’s _____.
Energy
When two organisms compete for the same resource, it is called this.
Competition
According to natural selection, organisms with helpful traits are more likely to do this.
Survive and Reproduce
The boundary where tectonic plates move apart is called this.
A divergent boundary
Name one sign of a chemical reaction.
Color change, gas production, temperature change, or formation of a new substance
Frequency is measured in this unit.
Hertz (Hz)
If producers disappeared from an ecosystem, consumers would eventually do this.
Die because there would be no food/energy source
A population of birds develops different beak sizes over many generations because birds with helpful traits survive better. This process is called this.
Natural Selection
Put these in order from smallest to largest: Earth, solar system, Milky Way galaxy, universe.
Earth → solar system → Milky Way galaxy → universe
Iron and rust are different substances because they have different physical and chemical properties like density and this property.
Melting point
A student moves a rope faster to create waves. Which wave property increases?
Frequency
Energy decreases as it moves through a food chain because some energy is lost as this.
Heat